Vegetable Stattcks. 59 



By placing the ball of one of thefe Ther- 

 mometers in my bofom, and under an arm- 

 pit, I found the external heat of the body 

 54 of thefe degrees. The heat of milk, as 

 it comes from the Cow, is equal to 55 de- 

 grees, which is nearly the fame with that 

 for hatching of eggs 5 the heat of urine 

 58 degrees. The common temperate point 

 in thermometers is about 18 degrees. 



The hotteft Sun-fhine in the year 1727 

 raifed the fpirit in the thermometer expofed 

 to it, 88 degrees j a heat 24 degrees greater 

 than that of the blood of animals: And 

 tho' plants endure this, and a confiderably 

 greater heat within the Tropicks, for fome 

 hours each day, yet the then hanging of the 

 leaves of many of them mews that they 

 could not long fublift under it, were they 

 not frequently refrefhed by the fucceeding 

 evening and night. 



The common noon-tide heat in the Sun 

 in "July is about 50 degrees : The heat of 

 the air in the made in July is at a medium 

 38 degrees. The May and June heat is from 

 17 to 30 degrees: the moll genial heat for 

 the generality of plants, in which they flou- 

 rim moft, and make the greateft progrefs in 

 their growth. The autumnal and vernal 



heat 



