diff --git a/demo/moulinrouge/__init__.py b/demo/moulinrouge/__init__.py
index 298d2eb..635aa92 100644
--- a/demo/moulinrouge/__init__.py
+++ b/demo/moulinrouge/__init__.py
@@ -213,7 +213,7 @@ def create_app():
             else:
                 config.x_labels = [random_label() for i in range(data)]
             svgs.append({'type': type,
-                         'series': xy_series if type == 'XY' else other_series,
+                         'series': xy_series if chart._dual else other_series,
                          'config': b64encode(pickle.dumps(config))})
 
         return render_template('svgs.jinja2',
diff --git a/demo/moulinrouge/tests.py b/demo/moulinrouge/tests.py
index 7e63a5f..73ddaaa 100644
--- a/demo/moulinrouge/tests.py
+++ b/demo/moulinrouge/tests.py
@@ -376,8 +376,8 @@ def get_test_routes(app):
         chart.x_label_rotation = 25
         chart.y_label_rotation = 50
         chart.add('1', [30, 20, -2])
-        chart.add(10 * '1b', [-4, 50, 6], secondary=True)
-        chart.add(10 * '2b', [None, 10, 20], secondary=True)
+        chart.add('1b', [-4, 50, 6], secondary=True)
+        chart.add('2b', [None, 10, 20], secondary=True)
         chart.add('2', [8, 21, -0])
         chart.add('3', [None, 20, 10])
         chart.add('3b', [-1, 2, -3], secondary=True)
@@ -395,6 +395,8 @@ def get_test_routes(app):
     @app.route('/test/box')
     def test_box():
         chart = Box()
+        chart.js = ('http://l:2343/2.0.x/pygal-tooltips.js',)
+        chart.box_mode = '1.5IQR'
         chart.add('One', [15, 8, 2, -12, 9, 23])
         chart.add('Two', [5, 8, 2, -9, 23, 12])
         chart.add('Three', [8, -2, 12, -5, 9, 3])
@@ -408,6 +410,7 @@ def get_test_routes(app):
         stacked = StackedLine(stack_from_top=True, logarithmic=True)
         stacked.add('1', [1, 2])
         stacked.add('2', [10, 12])
+        stacked.x_labels = ['a', 'b', 'c', 'd']
         return stacked.render_response()
 
     @app.route('/test/stacked/reverse')
@@ -415,7 +418,6 @@ def get_test_routes(app):
         stacked = StackedBar(stack_from_top=True)
         stacked.add('1', [1, 2, 3])
         stacked.add('2', [4, 5, 6])
-        stacked.x_labels = ['a', 'b', 'c']
         return stacked.render_response()
 
     @app.route('/test/show_dots')
diff --git a/docs/api/pygal.adapters.rst b/docs/api/pygal.adapters.rst
index ee9be39..e69de29 100644
--- a/docs/api/pygal.adapters.rst
+++ b/docs/api/pygal.adapters.rst
@@ -1,7 +0,0 @@
-pygal.adapters module
-=====================
-
-.. automodule:: pygal.adapters
-    :members:
-    :undoc-members:
-    :show-inheritance:
diff --git a/pygal/adapters.py b/pygal/adapters.py
index 3720c63..04186d0 100644
--- a/pygal/adapters.py
+++ b/pygal/adapters.py
@@ -18,12 +18,15 @@
 # along with pygal. If not, see <http://www.gnu.org/licenses/>.
 """Value adapters to use when a chart doesn't accept all value types"""
 from decimal import Decimal
+from pygal._compat import is_str
 
 
 def positive(x):
     """Return zero if value is negative"""
     if x is None:
         return
+    if is_str(x):
+        return x
     if x < 0:
         return 0
     return x
diff --git a/pygal/graph/bar.py b/pygal/graph/bar.py
index f43c509..8e56719 100644
--- a/pygal/graph/bar.py
+++ b/pygal/graph/bar.py
@@ -88,7 +88,8 @@ class Bar(Graph):
             x_center, y_center = self._bar(
                 serie, bar, x, y, i, self.zero, secondary=rescale)
             self._tooltip_data(
-                bar, val, x_center, y_center, classes="centered")
+                bar, val, x_center, y_center, "centered",
+                self._get_x_label(i))
             self._static_value(serie_node, val, x_center, y_center)
 
     def _compute(self):
@@ -98,11 +99,13 @@ class Bar(Graph):
         if self._max:
             self._box.ymax = max(self._max, self.zero)
 
-        x_pos = [
+        self._x_pos = [
             x / self._len for x in range(self._len + 1)
         ] if self._len > 1 else [0, 1]  # Center if only one value
 
-        self._points(x_pos)
+        self._points(self._x_pos)
+
+        self._x_pos = [(i + .5) / self._len for i in range(self._len)]
 
     def _compute_secondary(self):
         """Compute parameters for secondary series rendering"""
diff --git a/pygal/graph/base.py b/pygal/graph/base.py
index 7b3abf8..7848fb3 100644
--- a/pygal/graph/base.py
+++ b/pygal/graph/base.py
@@ -149,6 +149,8 @@ class BaseGraph(object):
                         value = (None, None, None)
                     elif not is_list_like(value):
                         value = (value, self.zero, self.zero)
+                    elif len(value) == 2:
+                        value = (1, value[0], value[1])
                     value = list(map(adapter, value))
                 elif self._dual:
                     if value is None:
diff --git a/pygal/graph/box.py b/pygal/graph/box.py
index 5f368c5..2629f4e 100644
--- a/pygal/graph/box.py
+++ b/pygal/graph/box.py
@@ -50,14 +50,16 @@ class Box(Graph):
         def format_maybe_quartile(x):
             if is_list_like(x):
                 if self.box_mode == "extremes":
-                    return 'Min: %s Q1: %s Q2: %s Q3: %s Max: %s' \
-                        % tuple(map(sup, x[1:6]))
+                    return (
+                        'Min: %s\nQ1 : %s\nQ2 : %s\nQ3 : %s\nMax: %s' %
+                        tuple(map(sup, x[1:6])))
                 elif self.box_mode in ["tukey", "stdev", "pstdev"]:
-                    return 'Min: %s Lower Whisker: %s Q1: %s Q2: %s Q3: %s '\
-                        'Upper Whisker: %s Max: %s' % tuple(map(sup, x))
+                    return (
+                        'Min: %s\nLower Whisker: %s\nQ1: %s\nQ2: %s\nQ3: %s\n'
+                        'Upper Whisker: %s\nMax: %s' % tuple(map(sup, x)))
                 elif self.box_mode == '1.5IQR':
                     # 1.5IQR mode
-                    return 'Q1: %s Q2: %s Q3: %s' % tuple(map(sup, x[2:5]))
+                    return 'Q1: %s\nQ2: %s\nQ3: %s' % tuple(map(sup, x[2:5]))
             else:
                 return sup(x)
         return format_maybe_quartile
@@ -71,15 +73,14 @@ class Box(Graph):
             serie.values, serie.outliers = \
                 self._box_points(serie.values, self.box_mode)
 
+        self._x_pos = [
+            (i + .5) / self._order for i in range(self._order)]
+
         if self._min:
             self._box.ymin = min(self._min, self.zero)
         if self._max:
             self._box.ymax = max(self._max, self.zero)
 
-    def _compute_x_labels(self):
-        self._x_labels = self.x_labels and list(zip(self.x_labels, [
-            (i + .5) / self._order for i in range(self._order)]))
-
     def _plot(self):
         """Plot the series data"""
         for serie in self.series:
@@ -108,7 +109,8 @@ class Box(Graph):
 
         x_center, y_center = self._draw_box(
             box, serie.values[1:6], serie.outliers, serie.index, metadata)
-        self._tooltip_data(box, val, x_center, y_center, classes="centered")
+        self._tooltip_data(box, val, x_center, y_center, "centered",
+                           self._get_x_label(serie.index))
         self._static_value(serie_node, val, x_center, y_center)
 
     def _draw_box(self, parent_node, quartiles, outliers, box_index, metadata):
diff --git a/pygal/graph/dot.py b/pygal/graph/dot.py
index 21e9dcb..733fceb 100644
--- a/pygal/graph/dot.py
+++ b/pygal/graph/dot.py
@@ -68,7 +68,9 @@ class Dot(Graph):
                     ' negative' if value < 0 else '')), metadata)
 
             value = self._format(value)
-            self._tooltip_data(dots, value, x, y, classes='centered')
+            self._tooltip_data(
+                dots, value, x, y, 'centered',
+                self._get_x_label(i))
             self._static_value(serie_node, value, x, y)
 
     def _compute(self):
@@ -86,10 +88,6 @@ class Dot(Graph):
                 (self._x_pos[i], self._y_pos[j])
                 for i in range(x_len)]
 
-    def _compute_x_labels(self):
-        self._x_labels = self.x_labels and list(
-            zip(self.x_labels, self._x_pos))
-
     def _compute_y_labels(self):
         self._y_labels = list(zip(
             self.y_labels or [
diff --git a/pygal/graph/dual.py b/pygal/graph/dual.py
index 266e828..6ed3be0 100644
--- a/pygal/graph/dual.py
+++ b/pygal/graph/dual.py
@@ -51,3 +51,7 @@ class Dual(Graph):
 
         else:
             self._x_labels = list(zip(map(self._x_format, x_pos), x_pos))
+
+    def _get_x_label(self, i):
+        """Convenience function to get the x_label of a value index"""
+        return
diff --git a/pygal/graph/funnel.py b/pygal/graph/funnel.py
index 98135b3..73b47d8 100644
--- a/pygal/graph/funnel.py
+++ b/pygal/graph/funnel.py
@@ -53,11 +53,13 @@ class Funnel(Graph):
                 points=' '.join(map(fmt, map(self.view, poly))),
                 class_='funnel reactive tooltip-trigger'), metadata)
 
+            # Poly center from label
             x, y = self.view((
-                # Poly center from label
                 self._center(self._x_pos[serie.index]),
                 sum([point[1] for point in poly]) / len(poly)))
-            self._tooltip_data(funnels, value, x, y, classes='centered')
+            self._tooltip_data(
+                funnels, value, x, y, 'centered',
+                self._get_x_label(serie.index))
             self._static_value(serie_node, value, x, y)
 
     def _center(self, x):
diff --git a/pygal/graph/gauge.py b/pygal/graph/gauge.py
index b6f1044..01a3060 100644
--- a/pygal/graph/gauge.py
+++ b/pygal/graph/gauge.py
@@ -86,7 +86,9 @@ class Gauge(Graph):
                 metadata)
 
             x, y = self.view((.75, theta))
-            self._tooltip_data(gauges, value, x, y)
+            self._tooltip_data(
+                gauges, value, x, y,
+                xlabel=self._get_x_label(i))
             self._static_value(serie_node, value, x, y)
 
     def _y_axis(self, draw_axes=True):
@@ -138,6 +140,9 @@ class Gauge(Graph):
             self.min_,
             self.max_)
 
+    def _compute_x_labels(self):
+        pass
+
     def _compute_y_labels(self):
         y_pos = compute_scale(
             self.min_, self.max_, self.logarithmic,
diff --git a/pygal/graph/graph.py b/pygal/graph/graph.py
index b11ec97..53b7ca7 100644
--- a/pygal/graph/graph.py
+++ b/pygal/graph/graph.py
@@ -429,7 +429,7 @@ class Graph(PublicApi):
              if y is not None else None)
             for x, y in points]
 
-    def _tooltip_data(self, node, value, x, y, classes=None):
+    def _tooltip_data(self, node, value, x, y, classes=None, xlabel=None):
         """Insert in desc tags informations for the javascript tooltip"""
         self.svg.node(node, 'desc', class_="value").text = value
         if classes is None:
@@ -444,6 +444,9 @@ class Graph(PublicApi):
                       class_="x " + classes).text = str(x)
         self.svg.node(node, 'desc',
                       class_="y " + classes).text = str(y)
+        if xlabel:
+            self.svg.node(node, 'desc',
+                          class_="x_label").text = str(xlabel)
 
     def _static_value(self, serie_node, value, x, y):
         """Write the print value"""
@@ -499,6 +502,12 @@ class Graph(PublicApi):
         """Hook called after compute and before margin computations and plot"""
         pass
 
+    def _get_x_label(self, i):
+        """Convenience function to get the x_label of a value index"""
+        if not self.x_labels or not self._x_labels or len(self._x_labels) <= i:
+            return
+        return self._x_labels[i][0]
+
     @property
     def all_series(self):
         """Getter for all series (nomal and secondary)"""
@@ -716,8 +725,8 @@ class Graph(PublicApi):
         )
 
     def _compute_x_labels(self):
-        self._x_labels = self.x_labels and list(zip(self.x_labels, [
-            (i + .5) / self._len for i in range(self._len)]))
+        self._x_labels = self.x_labels and list(
+            zip(self.x_labels, self._x_pos))
 
     def _compute_y_labels(self):
         y_pos = compute_scale(
diff --git a/pygal/graph/histogram.py b/pygal/graph/histogram.py
index 4933674..5e10514 100644
--- a/pygal/graph/histogram.py
+++ b/pygal/graph/histogram.py
@@ -22,16 +22,14 @@ as bars of varying width.
 """
 
 from __future__ import division
-from pygal._compat import is_list_like
+
 from pygal.graph.dual import Dual
-from pygal.util import (
-    swap, ident, compute_scale, decorate, cached_property, alter)
+from pygal.util import alter, cached_property, decorate, ident, swap
 
 
 class Histogram(Dual):
 
     """Histogram chart class"""
-
     _series_margin = 0
 
     @cached_property
@@ -97,7 +95,8 @@ class Histogram(Dual):
             x_center, y_center = self._bar(
                 serie, bar, x0, x1, y, i, self.zero, secondary=rescale)
             self._tooltip_data(
-                bar, val, x_center, y_center, classes="centered")
+                bar, val, x_center, y_center, "centered",
+                self._get_x_label(i))
             self._static_value(serie_node, val, x_center, y_center)
 
     def _compute(self):
diff --git a/pygal/graph/horizontal.py b/pygal/graph/horizontal.py
index d482481..74694a4 100644
--- a/pygal/graph/horizontal.py
+++ b/pygal/graph/horizontal.py
@@ -53,3 +53,9 @@ class HorizontalGraph(Graph):
             self.width - self.margin_box.x,
             self.height - self.margin_box.y,
             self._box)
+
+    def _get_x_label(self, i):
+        """Convenience function to get the x_label of a value index"""
+        if not self.x_labels or not self._y_labels or len(self._y_labels) <= i:
+            return
+        return self._y_labels[i][0]
diff --git a/pygal/graph/line.py b/pygal/graph/line.py
index 1cd47e5..38d448f 100644
--- a/pygal/graph/line.py
+++ b/pygal/graph/line.py
@@ -120,7 +120,8 @@ class Line(Graph):
                     dots, 'circle', cx=x, cy=y, r=serie.dots_size,
                     class_='dot reactive tooltip-trigger'), metadata)
                 self._tooltip_data(
-                    dots, val, x, y)
+                    dots, val, x, y,
+                    xlabel=self._get_x_label(i))
                 self._static_value(
                     serie_node, val,
                     x + self.style.value_font_size,
@@ -141,11 +142,11 @@ class Line(Graph):
     def _compute(self):
         """Compute y min and max and y scale and set labels"""
         # X Labels
-        x_pos = [
+        self._x_pos = [
             x / (self._len - 1) for x in range(self._len)
         ] if self._len != 1 else [.5]  # Center if only one value
 
-        self._points(x_pos)
+        self._points(self._x_pos)
 
         if self.include_x_axis:
             # Y Label
diff --git a/pygal/graph/map.py b/pygal/graph/map.py
index 690e967..72cac70 100644
--- a/pygal/graph/map.py
+++ b/pygal/graph/map.py
@@ -121,7 +121,7 @@ class BaseMap(Graph):
                         alter(node, metadata)
 
                     value = self._get_value((area_code, value))
-                    self._tooltip_data(area, value, 0, 0, classes='auto')
+                    self._tooltip_data(area, value, 0, 0, 'auto')
 
         self.nodes['plot'].append(map)
 
diff --git a/pygal/graph/pie.py b/pygal/graph/pie.py
index cc11336..edd8fc7 100644
--- a/pygal/graph/pie.py
+++ b/pygal/graph/pie.py
@@ -82,7 +82,7 @@ class Pie(Graph):
 
             alter(self.svg.slice(
                 serie_node, slice_, big_radius, small_radius,
-                angle, start_angle, center, val), metadata)
+                angle, start_angle, center, val, i), metadata)
             start_angle += angle
             total_perc += perc
 
@@ -91,7 +91,7 @@ class Pie(Graph):
             self.svg.slice(serie_node,
                            self.svg.node(slices, class_="big_slice"),
                            radius * .9, 0, serie_angle,
-                           original_start_angle, center, val)
+                           original_start_angle, center, val, i)
         return serie_angle
 
     def _compute_x_labels(self):
diff --git a/pygal/graph/radar.py b/pygal/graph/radar.py
index 040bbfa..0815e85 100644
--- a/pygal/graph/radar.py
+++ b/pygal/graph/radar.py
@@ -39,7 +39,6 @@ class Radar(Line):
 
     def __init__(self, *args, **kwargs):
         """Init custom vars"""
-        self._x_pos = None
         self._rmax = None
         super(Radar, self).__init__(*args, **kwargs)
 
@@ -168,14 +167,14 @@ class Radar(Line):
     def _compute(self):
         """Compute r min max and labels position"""
         delta = 2 * pi / self._len if self._len else 0
-        x_pos = [.5 * pi + i * delta for i in range(self._len + 1)]
+        self._x_pos = [.5 * pi + i * delta for i in range(self._len + 1)]
         for serie in self.all_series:
             serie.points = [
-                (v, x_pos[i])
+                (v, self._x_pos[i])
                 for i, v in enumerate(serie.values)]
             if self.interpolate:
                 extended_x_pos = (
-                    [.5 * pi - delta] + x_pos)
+                    [.5 * pi - delta] + self._x_pos)
                 extended_vals = (serie.values[-1:] +
                                  serie.values)
                 serie.interpolated = list(
@@ -190,11 +189,6 @@ class Radar(Line):
         self._rmax = self._max or 1
         self._box.set_polar_box(self._rmin, self._rmax)
         self._self_close = True
-        self._x_pos = x_pos
-
-    def _compute_x_labels(self):
-        self._x_labels = self.x_labels and list(
-            zip(self.x_labels, self._x_pos))
 
     def _compute_y_labels(self):
         y_pos = compute_scale(
diff --git a/pygal/graph/stackedbar.py b/pygal/graph/stackedbar.py
index aca0b57..5b61e4f 100644
--- a/pygal/graph/stackedbar.py
+++ b/pygal/graph/stackedbar.py
@@ -65,11 +65,11 @@ class StackedBar(Bar):
         positive_vals = positive_vals or [self.zero]
         negative_vals = negative_vals or [self.zero]
 
-        x_pos = [
+        self._x_pos = [
             x / self._len for x in range(self._len + 1)
         ] if self._len > 1 else [0, 1]  # Center if only one value
 
-        self._points(x_pos)
+        self._points(self._x_pos)
 
         self.negative_cumulation = [0] * self._len
         self.positive_cumulation = [0] * self._len
@@ -82,6 +82,8 @@ class StackedBar(Bar):
             self.secondary_positive_cumulation = [0] * self._len
             self._pre_compute_secondary(positive_vals, negative_vals)
 
+        self._x_pos = [(i + .5) / self._len for i in range(self._len)]
+
     def _pre_compute_secondary(self, positive_vals, negative_vals):
         """Compute secondary y min and max"""
         self._secondary_min = (negative_vals and min(
diff --git a/pygal/graph/time.py b/pygal/graph/time.py
index 879b2f3..1ad22f8 100644
--- a/pygal/graph/time.py
+++ b/pygal/graph/time.py
@@ -25,7 +25,7 @@ into float for xy plot and back to their type for display
 from pygal.adapters import positive
 from pygal.graph.xy import XY
 from datetime import datetime, date, time, timedelta
-from pygal._compat import timestamp, total_seconds
+from pygal._compat import timestamp, total_seconds, is_str
 
 
 def datetime_to_timestamp(x):
@@ -70,6 +70,8 @@ def time_to_seconds(x):
             ((x.hour * 60) + x.minute) * 60 + x.second
         ) * 10 ** 6 + x.microsecond) / 10 ** 6
 
+    if is_str(x):
+        return x
     # Clamp to valid time
     return x and max(0, min(x, 24 * 3600 - 10 ** -6))
 
diff --git a/pygal/graph/treemap.py b/pygal/graph/treemap.py
index bab2615..81ee7b1 100644
--- a/pygal/graph/treemap.py
+++ b/pygal/graph/treemap.py
@@ -55,13 +55,16 @@ class Treemap(Graph):
                 class_='rect reactive tooltip-trigger'),
             metadata)
 
-        self._tooltip_data(rect, value,
-                           rx + rw / 2,
-                           ry + rh / 2,
-                           classes='centered')
-        self._static_value(serie_node, value,
-                           rx + rw / 2,
-                           ry + rh / 2)
+        self._tooltip_data(
+            rect, value,
+            rx + rw / 2,
+            ry + rh / 2,
+            'centered',
+            self._get_x_label(i))
+        self._static_value(
+            serie_node, value,
+            rx + rw / 2,
+            ry + rh / 2)
 
     def _binary_tree(self, data, total, x, y, w, h, parent=None):
         if total == 0:
@@ -115,6 +118,12 @@ class Treemap(Graph):
             self._binary_tree(
                 half2, half2_sum, x + x_pivot, y, w - x_pivot, h, parent)
 
+    def _compute_x_labels(self):
+        pass
+
+    def _compute_y_labels(self):
+        pass
+
     def _plot(self):
         total = sum(map(sum, map(lambda x: x.values, self.series)))
         if total == 0:
diff --git a/pygal/svg.py b/pygal/svg.py
index f75d61d..137c93e 100644
--- a/pygal/svg.py
+++ b/pygal/svg.py
@@ -143,7 +143,7 @@ class Svg(object):
 
         dct = get_js_dict()
         # Config adds
-        dct['legends'] = self.graph._legends
+        dct['legends'] = self.graph._legends + self.graph._secondary_legends
 
         common_script.text = " = ".join(
             ("window.config", json.dumps(
@@ -239,7 +239,7 @@ class Svg(object):
 
     def slice(
             self, serie_node, node, radius, small_radius,
-            angle, start_angle, center, val):
+            angle, start_angle, center, val, i):
         """Draw a pie slice"""
         project = lambda rho, alpha: (
             rho * sin(-alpha), rho * cos(-alpha))
@@ -274,7 +274,9 @@ class Svg(object):
         x, y = diff(center, project(
             (radius + small_radius) / 2, start_angle + angle / 2))
 
-        self.graph._tooltip_data(node, val, x, y, classes="centered")
+        self.graph._tooltip_data(
+            node, val, x, y, "centered",
+            self.graph._x_labels and self.graph._x_labels[i][0])
         if angle >= 0.3:  # 0.3 radians is about 17 degrees
             self.graph._static_value(serie_node, val, x, y)
         return rv