[ 4^6 ] 
D°. from another Experiment. Jurin 
Sanguinis humani cuticula alba. Davies 
Human blood when grown cold. Jurin 
The fame as running immediately from 
the vein. Jurin. 
The ferum of human blood. Jurin. 
D°. ‘Davies . . ... 
Ichthyocolla. Freind. 
A Hen's Egg. ‘ Davies . 
Milk. J.C. C. 
Lac caprinum. Mufschenbr. 
« Lac. Freind. .... 
Urine. J.C. C. 
Id. Freind. ' 
1.082 
i.oy6 
i.oyy 
1.030 
1.026 
I. HI 
1.090 
1.031 
1.009 
0.960 
1.030 
1. 012 
Manat i Lapis is faid to be a done, found in 
the head of the Manatee, or Sea-Cow of the IVeft- 
Indies. SccRay’s Synopfis methodic a Animalium J 3 ) ua - 
drupedum &c. Land. 1693. 8°. Thefe Stones and 
Pearls are the heavieft of ail the animal productions 
we are acquainted with. 
Dr. Jurin has obferved, Thil. Tranf. N°. 369. 
that, in examining frefh Human Calculi whilft they 
were dill impregnated with Urine, he had met fuch 
as exceeded the weight of dome forts of burnt 
earthen ware and alabader, and approached very 
near to that of brick, and the fofter fort of paving 
done 5 which I have myfclf alfo found to be true. 
Whereas thofe who have made their experiments 
upon fuch Calculi , as had mod probably been a 
confiderable time taken out of the bladder, and had 
confequently lod much of their weight, by the 
evaporation of the urine, with which they had at 
fird 
