/ 



*? 



i 



m 



Dr. HolyoTce^s Meteorological Observations. 



385 



temperature at sunrise, would have been found to be 52 ^ instead of 

 50'. the number found by using the temperature at 8 A. M, When 

 two or more days give the same number of degrees for the greatest 

 change, that was put down in the column, in which the change 

 took place in the least time, whenever this distinction existed. 



When the degrees of heat and cold in two or more days in 

 any month happened to be the same, as was not seldom the 

 that day, whose mean was greatest or least, was put down as the 

 Hottest, or Coldest day, accordingly, in its proper column. 



Tliese latter remarks are applicable to the calculations from 

 1804 to 1812 inclusive, and the results arising from them, this part 



till that advanced stage of 



% 



of 

 the 



plan not 



Thes 



g heen adopted till I 

 9 years may serve 



particularly 



show the rate of the variation of the temperatur 



Dr Holyoke's Manuscrijtts,irom which these calculations have 



been made, are entitled Meteorolo 

 with almost incredible assiduity, i 



In these he has registered 

 e third of a century, in i 



9 



perspicuous 



and accurate manner, in about twenty columns, 



the state of the hygrometer 

 latter both in the house and 



of 



open air, generally four 



Th 



a day. 

 direction and 

 and almost ei 



number of times he has recorded in them the 



§ 



atmospheric 



ge, by an appro 



priate and convenient character, invented by himself, by which he 



has condensed 



a 



He has civen here truly 



parvo 



The various states of 



pearances of the heavens are indicated by about sixty such char- 

 acters. Besides, these Registers contain a very good Calendar of 

 Flora, and a record of Accidents, embracing 



many natural phe- 



noraena and other 



events, as 



parhelia 



&c 



may be fairly classed under the head of Meteorology 



It 



T^^ 



