Spring Migration (1914) at Houston, Tex. 129 



Bayous, both of which How eastward toward Galveston Bay, 

 the latter skirting the city on the south and joining the former 

 a few miles to the east. The remainder of the country is 

 flat, uncultivated prairie, sprinkled with small ponds or 

 grassy marshes. 



A line drawn nortli and south through Houston Avould be 

 the center of the United Stat(^s; the city itself is a little 

 south of New Orleans, Louisiana, and St. Augustine. Florida, 

 and more than 200 miles south of California's southern 

 boundary. 



The majority of the walks were taken in two directions; 

 the first to the west of the city along the Buffalo Bayou 

 woods, the timber to the right and the prairie to the left, and 

 the second to the south of the city, passing Bray's Bayou and 

 its narrow strips of timber just after leaving Houston, and 

 then across the extensive prairie to Taylor's Ranch. Ti/o miles 

 south of Houston. 



Weather Conditions. — It would Ix' far too tedious and of 

 no especial value to go into details of the weather conditions, 

 but before the reader can realize the truth of Prof. Cooke's 

 theories as seconded by this paper, he must appreciate the 

 unusual conditions Avhich accompanied the migration. 



January was 4.9° warmer than is usual for this month, the 

 mean temperature being 58°, with the lowest at 32' and high- 

 est at 79°. 



February was 1.4° warmer than is usual, tlie mean for 

 the month being 53°. Notwithstanding the fact that this con- 

 dition occurred, on seven days the mercury dropped suddenly 

 to 32°, on the 7th falling to 24°, the coldest day of the whole 

 winter. 



On the other hand, March was 4.2° colder than usual, the 

 mercury ranging from 36° to 80°, with a meaDi of 59°. 



The mean temperature for April was 68°, 1.7° below the 

 general average; lowest 38° and highest 86°. 



Although the winter was quite dry, the whole of the migra- 

 tion season was unusually rainy, and during the early part 

 of May the region was nearly flooded by the unusually heavy 

 downpours. When one takes into consideration that, though 



