xlvi 



Mr. John H. Tice accounted for the case mentioned by Dr. 

 McPheeters by supposing there was water near or in the tree. 



Dr. S. G. Moses exhibited a tooth of Elephas primigenius 

 from Sulphur Springs, El Paso, New Mexico. 



Dr. Engelmann remarked upon the earliness of seasons, that 

 since 1833, ^^ have had here two springs earlier than the pres- 

 ent, and several almost as early. The mean temperature of 

 March and April, during that time, was 50°. The earliest season 

 occurred in 1842, though the springs of 1834, 1842, 1851, i860, 

 and 1871, may be called unusually early seasons. At first, the 

 present season bid fair to be earlier than that of 1842, but the 

 severe drouth has rendered it at present later. He had noticed 

 the flowering of some of the more common trees in the order of 

 their earliness, viz : soft maple, elm, peach, sweet cherry, plum, 

 then pear about the same time, apple, quince, and lastly, lo- 

 cust or acacia. On the 23d of April, 1834;, a severe frost de- 

 stroyed all the young fruit and foliage of orchard and forest, and 

 we have since that time had two instances of late frosts in May. 



Dr. Wislizenus mentioned another peculiarity of the present 

 season, namely: its storminess as well as its lack of rain. Rain 

 guage so far, i^ inches : in ordinary s« Aiv^ns it is 8.29 inches. 



Mr. D. T. Snyder was elected an associate member. 



May I, 187 1. 



Dr. BoisLiNiERE, Vice-President, in the chair. 



Thirteen members present. 



Exchanges received were laid upon the table. 



Dr. Wislizenus gave a summary of his Meteorological Obser- 

 vations for March and April : Mean temperature for March, 

 53.03° ; average for 30 years, 44.4°. Mean temperature for 

 April, 61.2°; average for 30 years, 56.1°. Rainfall in March, 

 1. 21 inches ; average for 30 years, 3.81 inches ; in April, .3 of an 

 inch ; average, 3.96 inches. 



During the frost on the morning of the 22d of April, he had 

 noticed a difference of 13° in a difference of elevation of 100 feet. 



Dr. Engelmann remarked that the black locust tree was in full 

 bloom. In thirty-eight years, only one instance had occurred 



