diff --git a/matplotlib/matplotlib.ipynb b/matplotlib/matplotlib.ipynb
index d603fb7..59a389c 100644
--- a/matplotlib/matplotlib.ipynb
+++ b/matplotlib/matplotlib.ipynb
@@ -461,6 +461,52 @@
       }
      ],
      "prompt_number": 9
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "## Histograms"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# Gaussian, mean 1, stddev .5, 1000 elements\n",
+      "samples = np.random.normal(loc=1.0, scale=0.5, size=1000)\n",
+      "print(samples.shape)\n",
+      "print(samples.dtype)\n",
+      "print(samples[:30])\n",
+      "plt.hist(samples, bins=50);\n",
+      "plt.show()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "(1000,)\n",
+        "float64\n",
+        "[ 0.78414546  0.7624507   0.79832022  1.43772119  0.6277384   0.95119108\n",
+        "  0.86033247  2.05204185  1.34378449  0.51229619  2.08940893  1.96080879\n",
+        "  0.90780563  0.82401283  0.63668015  1.50731702  1.52091633  0.59678776\n",
+        "  0.5543333   0.67782493  0.64534513  0.87408671  0.99390343  1.81493002\n",
+        "  0.46069816  1.31869943  1.26709913  1.96472827  0.97586513  0.96092536]\n"
+       ]
+      },
+      {
+       "metadata": {},
+       "output_type": "display_data",
+       "png": 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dAlWt9f8l+cHNr/8wyZ3DKwkAYLL4YE8AgEY7mUMFAM3WrlzOmTOne7br0gZ2m0AFwK54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\nQmCC\n",
+       "text": [
+        "<matplotlib.figure.Figure at 0x10d0b2d90>"
+       ]
+      }
+     ],
+     "prompt_number": 10
     }
    ],
    "metadata": {}