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‘ ocherMatter, from which more might be made than from 
Urine, telling me there was fo great a demand for it, that 
it w^ou’d be of very great advantage to him. It 
being then a very hot Summer, I caufed a piece of 
the dry’d Matter in the Fields, where they empty 
the Houles of Office, to be di'gg’d up, in which, when 
broken in the Dark, a great number of rmali Parti- 
cles of Pfjofphorns appear’d : This Matter I carry ’d to 
Mr. w'ho view’d it with great Satisfadion, and 
Mr. Bilgar, by his Direction, fell to Work thereon, but 
from it cou’d make very little or no Phofphorus, till ano- 
ther Matter was added to it in Di filiation, and then he 
cou’d therewith make large Quantities, to his great Pro- 
fit ^ for while 1 was at his Houfe, I often faw him make 
it, and fell it for 'fix Guineas, and fix Louis d*Ors ?ix\ 
Ounce, whereby he got fo much Money, that, I believe, 
he thought himfelf above his Bufinefs, and quickly left 
England ^ fo that we lofi an Honefi: and Ingenious Chy- 
milf, and Mr. Boyle a Faithful and Induftrious Servant. I 
forbear to mention the abovefaid Matter in kindnefs to 
Mr. Godfrey, who fucceeded Mr. Bilgar as Chymilf to 
Mr. Boyle^ and is the only Perfon, that I know of, who 
now makes it. 
Now, vSzV, my being, as you have heard, well ac- 
quainted with the Artificial Phofphoms^ was the occafion 
of my making many Refledtians about it, and caus’d me 
to confider, whether there might not be in rerum naiura 
other natural ones, befides thofe that Mr. and fome 
others have given an- account of. 
You well know, 6'/>, that Humane Urine and Dung do 
plentifully abound with an Oleofum and Common Salt, fo 
that I take the Artificial Phofphorus to be nothing elfe but 
that Animal coagulated with the Mineral Acid of 
6pirit of Salt, which Congtdum is preferv’d and not dif- 
folv’d in Water, butaccended by Air. 
Thefe 
