% i b Mif cell cine a Curio fa. 



taken equal, the Degrees of Heat fhall be 

 in a Geometrical Proportion, and confequent- 

 ly may ea'lly be found by a Table of Loga- 

 rithms. Firft.of all therefore I found by a 

 Thermometer made of Linked Oil, that if 

 when the Inftni'ment was placed in melting 

 Snow,, the Oil occupied a Space of ioooo 

 parts, the fame Oil rarified by a Heat of the 

 firft Degree (that is by that of a Humane 

 Body) would extend to 10256 parts ^ and 

 by the Heat of Water beginning to boil, to 

 10705 parts; and by the Heat of Water 

 boiling -.vehemently, to 10725 parts; and by 

 the Heat of melted Tin (cooling, and be- 

 ginning to be of the Confidence of an Amal- 

 gama) to 11*5,16 parts; and by the Heat of 

 the fame Tin when 'tis quite harden'd, to 

 1 1496' parts. Therefore the Oil was rarified 

 in the proportion of 40 to 39, by the Heat 

 of a Humane Body ; and in the proportion 

 of 15 to 14, by the Heat of boiling Water 

 and in the proportion of 15 to 13, by the 

 Heat of the melted Tin, beginning to come 

 to the Confidence, of .an Amalgama^ and in 

 the proportion of 23 to 20, by rhe Heat of 

 * the fame Tin quite hardned. 



. The Rarefaction of Air with an equal De- 

 gree of Heat, was 10 times greater than that: 

 of Oil and the Rarefaftion of Oil nearly 15 

 times greater than that of Spirit ;of 'Wine/ 

 Now thefe things thus found/ fuppofing the! 

 Degrees of Heat in the Oil" to be propor- 

 tional to its Rarefacxion, and the Hea*t of a 

 Humane Body to be 12 parts :, from hence 

 p§ Heat of Water when it begins to boil ? : 

 ; 7r ' 11 >s 1 * l " u ~ ". ' > • comes. 



