a ‘ ‘ 
3 4 7 “y 
A zm a 5 s 
ee 
iy . iO oO N TE Ne S, : 
On the different Properties of Metal and l¥ooden Springs 69 
Phe Proce/s fuggefied by Jamus CARMICHAEL SMYTH, 
M.D. F.R.S. Fellow of the Royal College of Phyficians, 
and Phyfician Extraordinary to his Majefly, for determining 
the Effcé of the Nitric Acid in deflroying Contagion _ 68 
Defeription of an improved German Key for extraéting Teeth. 
By Mr, Cuaries Brown, Surgeon vy eh et 
On the Ufe of the new Metal called Chrome, the Oxyd of 
Chrome, and the Chromic Acid. By Cit:-VAUQUBLIN 74 
Experiments and Qbfervations on the. Phofphore/cente of the 
Luciole, Lampyris Italica. By Dr, CARRADORI, 77. 
On anew Infeét called Antiodontalgicus, and the Property 
pollefjed by it, in common with fome other Infeéts, of curs 
the Tooth-ache ‘s 
ahah a ag Oe ge 
Defcription of the Gazometer invented by M.Vaxn M ARUM 
and bis Apparatus, for producing Water by the Combuftitn 
Of Hidiegee an Ongen: Om pe a. 
On the Choice of Steel, and the Methods of bardening and 
tempering it. By MriS: VARLEY en "92 
 Defeription of the F.quus Hemionus or Dihiggetai of the Eaff- 
ern Deferts of Middle Afia. By Profeffor PALLAS 113, 234 
Obfervations on Animal Fat and the Caufes of Corpulency. 
By Dr. CoInDEeT we = ~ eee OE 
On the colouring Matter of vegetable Juices, and the Atiion 
exercifed on it by metallic Subjtances and their Oxyds, with 
a new Procefs for obiaining Lakes of. mote intenfe and 
..- falid Colours... By Cit. GUYTON - .. wee LO 
Short Account of the laft Ruffian Expedition for making Dif= 
coveries in the North-eajt Sea. By Profeffor BLUMEN~ 
BACH at Gollingen _ TAI 
New. Proce/s for obtaining Lemon Juice of a flronger Quality. 
_.. By M. BRUGNATELEI - - - 146 
An Experiment to prove the Permeability of Glafs to the Elec- 
tric uid. By Mr. W. Woop, F.L.S. . 147 
Defcription of ihe Apparatus employed by ihe Society for Phi- 
lofophical Experiments and Converfations, for producing 
Water by the Combuffion of Hydrogen Gas in Oxygen 
Gas: with an Account of the Procefs - 148 
On the Principles. of Iron and Steel. By Mr, Davtp Mu- 
. SHET, of the Clyde Iron Works - . 158 
Account of the Canis Graius Hibernicus,. or Lri/h Wolf-dog, 
‘deferibed in Pennant’s Hiflory of Quadrupeds, third edit. 
Fol. I. p. 241. By A, B. Lampert, E/g. FR. and 
F.L.S. : - - - - 168 
A Pofifcript to Mr. Varwey’s Paper on the Methods of bar- 
dening and tempering Steel = = +e weedy 
“une 
2 
