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NUMBER XXXL 



DECEMBER 1800. 



ILLUSTRATED WITH 



THE FOLLOWING ENGRAVINGS BY MR. LOWRY: 

 X. Additional Apparatus employed by Dr. Herfchel in hi« Experi- 

 ments on Heat and Light. 

 a. Figures to illuftrate C. Carnot's Principles o f the Infiniteilmal 

 Calculus. — Reprefentation of a newly invented Inftrument 

 for meafuving the Quantity of Caloric exprefltd from 

 Gakouj Bodies. 



J f ONDON: 



YHINTSD.'BY DAVIS, W1LKS, AND TAYLOR, CHAKCER.Y LANE J 



FOR A. tilloch: 



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