C 583 > 
I. A Paper of the Honourable Robert Boyl/* 
depoftted with the Secretaries of the Royal 
Society, 0#ob. 14. 1680. and opened fince 
his Death ; being an Account of his making 
the Phofphorus, &c. 
Sept. 3 o, *~1T* Here was taken a confideralle quantity^ 
1680. JL of Man s Vrine, fbecaufe the Liquor 
yields but a fmalJ proportion of the defired Quintef 
fence) and of this a good part at lead, had been for a 
pretty while digefted before it was ufed. Then this 
Liquor was diftilled with a moderate Heat, till the Spi- 
rituous and Saline parts were drawn off; after which 
the Superfluous Moifture al(b was abftra&ed (or evapo- 
rated away) till the remaining Subftance was brought 
to the confidence of a fomewhat thick Syrup, or a thin 
Extratt. This done, it was well incorporated with 
thrice its Weight of fine White Sand; and the Mixture 
being put into aftfong Stone- Retort , to which a large 
Receiver (in good part filTd with Water) was fo joynd, 
that the Nofe of the Retort did almoft touch the Wa«. 
ter : Then the two Veflels being carefully luted to- 
gether, a naked Fire was gradually adminiftred for 
Five or Six Hours, that all that was either Phlegmatic^ 
or Volatile might come over firft. When this was 
done, the Fire was encreafed, and at length for Five of 
or Six Hours made as firong and intenfe as the Furnace 
(which was not bad) was capable of giving : (which 
Violence of Fire is a Circumftance not to be omitted 
in this Operation.) By this means there came over 
good ftore of white Fumes, almoft like thofe that ap- 
pear in the Diftillation of the Oyl of Vitriol', and 
when 
