" Procealings of i fie British Association 
€ Sgkine agarics, collected at ihe same time, determined by combustion, 
_was found to be’0-74 per cent. for the fresh fungi, or 6°61 per cent. for 
he fungi dried at 212° F, Deducting-from the’ last stated numbers the 
rl aed y of nitrogen found to exist in the juice in the form of ammonia, we 
“find that only 0-536 per cent. of nitrogen’in the fresh, or 4°799 per cent. 
of. nitrogen in the dry fungi, e xists in the state of proteine compounds, 
and that nearly one third of the nitrogen obtained by direct combustion 
~ exists in the form of ammonia in the juice, or at all events i 
-..,. whieh the nitrogen adds nothing to the nutritive value of see fungi. 
ae & The nutritive value of the fungi has thus been overrated considerably ; ; 
prea many vege: 
r ele ker’s communication yan give in- 
ifection—Dr. Daubeny made some ob- 
aving been engaged in examining the dietaries of a large number at 
“exfensive establishments, he should lay the: sabia before the Meeting. . | 
On a peculiar Sore: produced in a Diamond shee mere the influence a ae 
e Voltaic Arc; by J. P. Gas 
M. Jaquelin was SS first to show that when ae diamond is subiiie | 
to hats high temperature and influence of the , are, 1 it quickly bar | 
a 
peara coke :—the diamond when in a native eats is an insulator 
or Sach eatoctor of electricity, but vhs 8 changed into coke it be- | 
; comes an excellent conductor. At the Chemical Section of the British 
: M 
Jaquelin, and subsequently, on the 16th of June, 1848, he publicly 
—— the experiment in London, in the theatre of the Royal Institu® 
On repeating the experiment a short time since before a few | 
fends, [ obtained a . product so totally different from that of M. — 4 
m induced to bring the subject before this Section, in thes= 
positive or platinum end of the onto or being formed in 
small cup or crucible, in which the diamond was placed ; 
