CONNECTION OF METEROLOGY WITH MIGRATIONS. 183 



the data seem not over trustworthy. From the Army Meteorological 

 Register, for twelve years, from 1843 to 1854 iuclusive, Wasbingtou, 

 1855, we take the following data : 



1843. This year, in Minnesota, Kansas, and Indian Territory, was 

 cold and dry. 



1844. Was of nearly average temperature ; dry in Minnesota, but wet 

 in Kansas, and to a less extent in Indian Territory. 



1845. Was rather warm, moderately dry in Minnesota and Indian 

 Territory, but very wet in Kansas (an error here ?). In this year swarms 

 are reported in Wyoming, and Idaho, and Texas. 



1846. Was warm in Minnesota ; elsewhere moderate ; moderate-y dry 

 in Minnesota and Indian Territory. Very dry in Kansas. There are 

 doubtful accounts of a swarm of locusts in Kansas this year. 



1847. Was rather cool and quite dry j locusts were reported in Wyo- 

 ming this year. 



1848. Was of nearly average temperature and rather dry. 



1849. Closely resembled the preceding year in temperature, but was 

 everywhere very wet. Locusts are reported in Texas, and doubtfully in 

 Minnesota. 



1850. Average warmth ; wet in jSTorthern Minnesota ; rather dry in 

 Texas, Indian Territory, and Mexico. 



1851 was rather warmer than the average. Minnesota and Texas were 

 rather dry. Indian Territory and Southern Kansas more so, while in 

 Northern Kansas the rainfall is 40 per cent, larger than the average. 

 Locusts reported this year in Utah. 



1852. Of average temperature. Nebraska a little warmer^ Minne- 

 sota, dry ; Nebraska, Northern Kansas, and Texas, less so ; Southern 

 Kansas, Indian Territory, and New Mexico, wet. Locusts reported in 

 Idaho and Utah. 



1853. Average temperature. New Mexico, quite warm ; Nebraska, 

 vret; Minnesota, rather dry; Indian Territory and Southern Texas 

 more so ; Northern Texas, Kansas, and New Mexico of average dryness. 

 Locusts in Montana and Utah. 



1854. A warm year. Minnesota, Kansas, Nebraska, and New Mex- 

 ico, moderately dry ; Indian Territory and Southern Texas, wet. Locusts 

 in Utah, Nebraska, and Texas. 



The data at command for the succeeding years are exceedingly meagre, 

 being mostly incidental references to the weather in various works, and 

 in the answers to the circulars of the commission. 



1855 was very dry, " the driest known for ten years." Locusts are 

 reported from Texas and Utah, and doubtfully from Minnesota and Wy- 

 oming. 



1856. In Minnesota occurred the only drought known between 1837 

 and 1862 ; closely resembled 1876. Locusts are reported in Texas, Kan- 

 sas, Iowa, Minnesota, Wyoming, and Utah. 



1857. A cold backward wet spring in Minnesota. Locusts in Texas, 

 Kansas, Nebraska, Iowa, Minnesota, Wyoming, and Utah. 



