180 Bijhop of Lanbaff’s Obfervations on 
yellow fulphur. This fulphur, which ftuck to the neck of 
he retort, had an oily appearance ; and the retort, when 
opened, had not only the fmell of the volatile fulphureous 
acid, which ufually accompanies the fublimatlon of fulphur, 
but It had alfo the ftrong empyreumatic fmell which pecu- 
liarly appertains to burnt oils; and It retained this fmell for 
feveral days. It has been remarked before, that the fait fepa- 
rable from the fulphur water was of a brownifli colour ; and 
others, who have analyfed this water, have met with a brown 
fubftance, which they knew not what to make of; both 
which appearances may be attributed to the oil, the exigence of 
which was rendered fo manifeft by the fublimation here men- 
tioned. I will not trouble the Society with any conjectures 
concerning the origin of this oil, or the medium of its com- 
bination with water ; the difcovery of it gave me feme pleafure,. 
as it feemed to add a degree of probability to what I had faid con- 
cerning the nature of the air with which, in one of my Che- 
mical Efl’ays, I had fuppofed Harrogate water to be impreg- 
nated. I will again take the liberty of repeating the query 
which I there propofed. 66 Does this air, and the inflammable 
air feparable from fome metallic fubftances, confifl: of oleaginous 
particles in an elaftic ftate ?”' When I ventured to conjecture,, 
in the Effay alluded to, that fulphureous waters received their 
impregnation from air of a particular kind, I did not know 
that Profeflor Bergman had advanced the fame opinion, and 
denominated that fpecies of air, Hepatic Air. I have Alice 
then feen his works, and' very readily give up to him not only 
the priority of the difcovery, but the merit of profecuting it; 
And though what he has faid concerning the manner of preci- 
pitating fulphur from thefe waters can leave no doubt in the 
mind of any chemift concerning the aCtual exiftence of fulphur 
7 in 
