:>-y> 



TRANS. OP THE ACAD. OF SCIENCE. 



positively that I referred this leaf to tliis horizon. They also 

 mistake my statements respecting the Myophoria orbicularis 

 and several other fossils. But this paper is already too long, 

 or I would quote their remarks and make the corrections 

 in a score of instances where they have misapprehended the 

 facts. To play the critic well one needs sound learning and 

 a clear head; he should read with care and understand what 

 he reads; and he must judge fairly, and clearly state his con- 

 clusions. 



Yearly Report of Atmospheric Electricity, Temperature, 

 and Humidity, from Observations made at St. Louis, 

 Mo. 



By A. Wislizenus, M.D. 



1. — Monthly Mean of Positive Atmospheric Electricity in 1861-1867, 

 based on daily observations at 6, 9, 12, 3, 6, and 9 o'clock, from 

 morning till night. 



ATMOSPHERIC ELECTRICITY. 



— Monthly Mean of Temperature and Relative Humidity in 

 1861-1867, based upon daily observations contemporaneous with 

 those of Atmospheric Electricity. 



TEMTERATURE. 



