260 Report of the Regents of the University, 



of the indigenous, Flowering and Filicoid " plants growing within 

 twenty miles of Bridgewater, Oneida County, N. Y." by A. Gray, 

 M. D., embracing 777 species ; and another, of the plants growing in 

 the vicinity of Cortland Academy, by George W. Bradford, M. D., 

 containing 563 species, exclusive of the class Cryptogamia and the 

 Grasses. There is a table of the latitude and longitude, and eleva- 

 tion of the places where the academies are situated. 



Very complete records, kept by T. Romeyn Beck, M. D., at Al- 

 bany, for the last thirteen years, together with tables of several previ- 

 ous years by other gentlemen, enabled him to make the following 

 abstract. 



He verified the observation of Humboldt, that the " mean tempe- 

 ratures of the year, obtained by two or th7-ee observations, do not dif- 

 fer sensibly, if the intermediate observation be sufficiently distant (four 

 or five hours) from the observation of maximum and minimum." In 

 taking the annual averages of the mean temperatures of the observa- 

 tions, thus made during eleven years, he found them to differ by 

 only 0-45. 



He ascertained the mean temp, of Albany, ") , 40.040 

 from the observations of seventeen years, ) 



Highest point of the thermometer, 100° in 1820. 



Lowest do. do. —20° in 1796. 



Greatest range, 120° 



The weather for 15 years gives an annual average of nearly 200 

 fair days. 



Rain, annual average, 79 days. 



Snow, do. 22 " 



Rain gage for 7 years, annual average, 40*64 inches. 



Winds 15 years — south 1509 J days, or an annual average of 

 lOOj days. 



Humboldt states that the isothermal line of 50° passes near Bos- 

 ton 5 and on comparing the results obtained at Albany, with those 

 upon which he founded his conclusions, we discover a very close ap- 

 proximation. 



Humboldt, in opposition to Kirwan, asserts, that the mean tempe- 

 rature of October approaches nearer to that of the whole year, than 

 the mean temperature of April. Dr. Beck finds from the observa- 

 dons of seventeen years, (which include the results of several very 

 intensely cold winters,) the average mean temperature of the year, 

 iohe 49-04°; of October, 50-63°; of April, 48-38°, 



