Sect. III. Agriculture and Vegetation. 55 



peared j a white fubftance fell to the bot- 

 tom, and was feparated from the liquor by 

 filtration. This powder being wafhed with 

 water, that all the falls might be feparated 

 from it, and calcined in a ftrong kitchen-fire 

 for five hours, gave me a quick lime, which 

 afforded good lime-water. 



FROM the fame quantity of clay marl, 

 treated the fame way, I got three drachms 

 and twenty-eight grains of clay, and thirty- 

 two grains of a calcarious earth. 



FROM the fame quantity of clay marl, 

 faturated with vinegar, and treated the fame 

 way, I got two drachms and fifty-nine 

 grains of clay ; and the remainder was a 

 calcarious earth, which, being burnt, afford- 

 ed good lime-water. 



THE fame quantity of a different clay 



marl, treated the fame way, afforded two 



drachms and fifty-four grains of clay, and 



one drachm fix grains of a calcarious earth. 



E 4 THE 



