TABLE 2.—_Rainfall at Ouargla, in millimeters._

+----+-----+-------+----+----+----+-----+----+

| | |No. of | | | | | |

|Year| Amt.| days |Jan.|Feb.|Mar.| Apr.|May |

| | | rain | | | | | |

+----+-----+-------+----+----+----+-----+----+

|1900| | 1 | | | | | |

| | | | | | | | |

|1901| | 18 | | | | | |

| | | | | | | | |

|1902| 70.5| 8 | | |11.3| | |

| | | | | | | | |

|1903|135.6| 14 |55.0| | | | |

| | | | | | | | |

|1904| 35.0| 26 |20.0| | | | |

| | | | | | | | |

|1905| | | | | | | |

| | | | | | | | |

|1906| | |15.0| | 2.0| 4.0| |

| | | | | | | | |

|1907|210.0| 18 | |68.2| 67|325.0|16.2|

+----+-----+-------+----+----+----+-----+----+

[**Continued]

+----+----+----+----+-----+----+----+----+

| | | | | | | | |

|Year|June|July|Aug.|Sept.|Oct.|Nov.|Dec.|

| | | | | | | | |

+----+----+----+----+-----+----+----+----+

|1900| | | | | | | |

| | | | | | | | |

|1901| | | | | | | |

| | | | | | | | |

|1902| | | 1.8| |46.4|11.0| |

| | | | | | | | |

|1903| | | | | |30.6|50.0|

| | | | | | | | |

|1904| | | | | 9.0| 4.0| 2.0|

| | | | | | | | |

|1905| | | | | | | |

| | | | | | | | |

|1906| | 4.0|80.0| 41.0|80.0| | |

| | | | | | | | |

|1907|20.0| | | 5.0| 3.3| 3.8| 1.3|

+----+----+----+----+-----+----+----+----+

The seasonal distribution of rainfall at four desert stations

shows also marked irregularities. The distribution (in percentages)

is given in table 3.

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