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induflry and accuracy in experiment is univerfally acknowledged, 

 in treating of the comparative quantity of curd contained in 

 different kinds of milk, ftates " that woman's milk, mixed with 

 " a quantity of runnet equal to what coagulated cow's milk, 

 " gave of curd very little, even not a fixth part of what cow's 

 " milk did." Had he taken off the cream before he added the 

 runnet, I am perfuaded he would have ftated the quantity of 

 curd obtained as little nr none. In fad his conclufion implies 

 nearly what I have flated ; he does not inform us what the 

 quantity obtained was, but what it was not. 



Professor Young's conclufion, from a number of very fatis- 

 fadory experiments, is, that human milk is not coagulated by 

 runnets ; nor do acids, whether mineral or vegetable, mixed with 

 it in large quantity, produce any feparature of curd from whey, 

 whether the milk be tepid or raifed to the boiling point. 



Doctor Ferris, whofe differtation on milk gained the Har* 

 reian prize medal at Edinburgh in the year 1782, confirms 

 Young's experiments on this fubjed ; and I have made a great 

 number to the fame purpofe in endeavouring to deted the 

 curd of human milk, but without fuccefs. I made ufe of all 

 the different kinds of acids, ardent fpirits, infufion of infants 

 flomachs, &c. in various proportions and degrees of temperature, 

 and I had perhaps a greater variety of milk from different women 

 than any of the gentlemen already mentioned ; and except in 

 one or two inflances never could perceive any thing like curd. 

 In both the inftances to v^'hich I allude there appeared, in con- 

 llqaence of fpontaneous acefcency, a fmall quantity of foft flakey 



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