Mifcellanea Curio fa. 3x1 



White Italian Marble of another fort 



of a vifibly clofer texture 2718 



Block-tin 73 21 



Copper 8843 



Lead H345 



Quick-filver 14019 



Quick-filver 13 593 



The laft Experiment was tried with another 

 quantity of Quick-filver, which had been, 

 ufed in Water in the preceding Experiment : 

 However I rather truft the laft, for that 1 

 found a fmall miftake (tho' here in the cal- 

 culation allowed for) in the weight of the 

 Glafs containing the Quick-filver in the trial 

 before. 



The Solids here mentioned were exami- 

 ned hydroftatically by weighing them in Air 

 and Water; but the Flaids, by weighing an 

 equal portion of each in a Glafs holding about 

 a quart. The numbers (hew the proportion 

 of gravity of equal portions ofthefe Bodies } 

 but if of thefe Bodies we take portions 

 equally heavy, their magnitudes will be reci- 

 procally proportional to their correfpondent 

 numbers, e.g, a cubic foot of water is to a cubic 

 foot of Alabafter in gravity as 1000 to 1872; 

 but a pound weight of water, is to a pound 

 weight Albafter in magnitude as 1872 to 1000. 

 So that knowing by the former Table the 

 weight of a cubic foot of Water, and by this, 

 the proportion in gravity betwixt Water 

 and Alabafter, we may by the Rule of Three 

 find the weight of a cubic foot of Alabafter, 

 and fo of any other ofthefe Bodies ; or we 

 may know their magnitude by knowing their 



X 4 S ra ~ 



