¥ 
PAP—PAP . : 
‘When compact, and of a redd wn hue, is good. _ 
_ Specific gravity, 1.3365 is inflammable; lly soluble 
in water, acetic, acetous and citric acids, lic liquors, 
‘and ether; is changed by long keeping and gradual ex- 
=. siccation, so as to break with a shining fuctre, and easily _ 
: ¢ ing yel -brown. One of 
ed by Thomas Astley, Esq. 
having been that length of 
m has a strong empyreumatic smell, and 
5 desti of the strong narcotic odour of the Turkey— 
is as nauseous, more bitter, but less acrid; is blacker, 
equally tenacious, but less plastic; more friable; more 
us these results, which wi 
_ directly be stated, to the successive labours of Derosnes, 
_ Seguin, Sertuerner, Robiquet, and Magendie—enlighten- 
ed, persevering chemists. It has been ascertained, that 
Opium consists of resin, gum, bitter extractive, sulphate 
of lime, gluten narcotina, and a peculiar alkaline body, 
containing the soporific virtues of the drug—this is called 
Morphia; it exists in natural combination with a peculiar, 
and, till these tions, unknown acid, now 
meconte ne principle of opium is a meco- 
#f morphia. Derosnes first obtain- 
bstance from opium, in 1803 : he found 
___ it soluble in acids, but no further ascertained its properties, 
Seguin, in 1804, discovered another crystalline substance — 
paneer’ 
+ 
ay, Oct*r, 26, 1827. 
sor * Philada, Fr 
eis : 
“Phe specimen of Opium, which-I gave to you.a ¥ two: eame into 
my possession in the winter of 1802-3. Thave So kamwledge of the age it hada 
pore 
at time. _—_—_s.. Yours, very truly, 
~'W. P. C, Barton, M. D. " 
