The daily range of the temperature is also considerable for all stations, but is especially marked in those of the High Plateau and the desert. The daily range as given by Engler for the former is 17.4° C., and for the latter 20.0° C., but the range on the High Plateau may be greater than 17.4° C., especially during the summer months. For example, at Batna, in 1904, a range of 19.4° C. was reported in April, 20.2° C. in June, 21.8° C. in July, and 20.2° C. in December. Except in December, the great ranges in temperature here cited were on days when the sirocco was blowing from the desert; hence, the usual daily range in temperature would be much less. In the Tell, and especially along the coast, the range in temperature recorded for any day is relatively little, although at the time of the sirocco, as well as during the season of drought, the daily range is not inconsiderable. Table 8 gives the maximum daily range for the months of 1904, for two stations, along the coast, including the Tell, and two stations on the High Plateau. The daily range reported for Batna in June, July, and August, 1902, was somewhat larger than the maxima given in table 8. In 1902 the maximum daily ranges in temperature for the three months at Batna were 23.9° C., 25.3° C., and 24.4° C. TABLE 8.—_Maximum daily range in temperature_, 1904. +--------------+-------+-------+-------+-------+-------+-------+ | Station. | Jan. | Feb. | Mar. | Apr. | May | June | +--------------+-------+-------+-------+-------+-------+-------+ | | _°C._ | _°C._ | _°C._ | _°C._ | _°C._ | _°C._ | | Algiers | 9.0 | 13.0 | 13.0 | 13.6 | 12.7 | 13.0 | | Ft. National | 10.4 | 13.8 | 13.0 | 12.4 | 13.0 | 12.8 | | Batna | 11.5 | 15.4 | 16.4 | 19.4 | | 20.2 | | Saida | 14.0 | 17.0 | 14.0 | 18.0 | 18.0 | 19.0 | +--------------+-------+-------+-------+-------+-------+-------+ [**Continued] +--------------+-------+-------+-------+-------+-------+-------+ | Station. | July | Aug. | Sept. | Oct. | Nov. | Dec. | +--------------+-------+-------+-------+-------+-------+-------+ | | _°C._ | _°C._ | _°C._ | _°C._ | _°C._ | _°C._ | | Algiers | 15.0 | 15.4 | 11.2 | 14.0 | 10.8 | 10.6 | | Ft. National | 12.4 | 14.8 | 16.4 | 11.2 | 11.6 | 11.0 | | Batna | 21.8 | 16.4 | 16.0 | 19.4 | | 20.2 | | Saida | 19.0 | 18.0 | 18.0 | 14.0 | 13.0 | 13.0 | +--------------+-------+-------+-------+-------+-------+-------+