In a few days will be published, in 1 vol. 8vo, 
DESCRIPTION of ACTIVE and EXTINCT VOLCANOS; 
with Remarks on their Origin, their Chemical Phenomena, and.the 
Character of their Products, as determined by the Condition of the Earth 
during the Period of their Formation. Being the Substance of some 
ectures delivered before the University of Oxford :—with much addi- 
Enal Matter, Illustrated by three Plates and by Engravings on Wood. 
x 
By CHARLES DAUBENY, M.D.F.RS. 
‘Fellow of the Geological Society, and of the College of Physicians in 
- London; Honorary Member of the Bristol Philosophical and Literary 
Institution ; Corresponding Associate of the Gioenean Society of Na- 
tural History at Catania; Professor of Chemistry, and Fellow of Mag- 
dalen College, Oxford. ; 
London: printed and published by W. Phillips, George-yard, Lombard- 
_ street: and by Joseph Parker, Oxford. 
PHARMACOPGIA LONDINENSIS, 
Iterum recognita et retractata, 1824, p. 6. 
“ACIDUM ACETICUM FORTIUS,” 
7 vel 
“© Acidum Aceticum & Ligno destillatum.” 
URE CONCENTRATED ACETIC ACID, agreeable to the Sample 
P furnished at the request of the Committee of the Royal College of 
Physicians, may be had of the Manufacturers, BEAUFOY & CO. South 
Lambeth, London. 
ENGRAVINGS IN THE PHILOSOPHICAL MAGAZINE, 
illustrative of the following Subjects: 
Vol, LXII. 1. Prof. Hare's Communications on Electricity, and the 
Self-acting Blowpipe.—2. Brunev’s new Mode of Tunnelling, and Road- 
way under the Thames.—3. Becqueret’s Experiments on the Develop- 
ment of Electricity by Pressure.—4. BARrtow’s Experiments on Mr. 
_ Marsn’s Thermo-electric Apparatus.—5. Mr. Seawarp’s Observations 
on Suspension Chain Bridges. 
; Vol. LXIII. 1. Mr.Gomperrz’s Method of defending Ships, &c.— 
2. Mr. R. Taytor’s Paper on the Upper Marine Formation in the Cliffs 
near Cromer.—3. Dr. WALCHNER’S A ceinatiot of Hyalosiderite; and 
Mr. Baity’s and Mr. Fraunnorer’s Accounts of the Circular Micro- 
meter.—4. Prof. Hare’s Single-leaf Electrometer and improved Defla. 
rators —5. Two new Species of Ascidia ; and Amphiuma means, a new 
atrachian Animal. 
Vol. LXIV. 1. Seawarn’s Hydro-pneumatic Pump.—2. Mr. Srur- 
cron’s Electro-magnetic Rotating Apparatus; and Mr. Haycrarr’s 
Apparatus for ascertaining the Specific Heat of Gases.—3. Fossil Remains 
Bf Renrian Animals found fn America. 
Vol. LXV, 1. Captain Graypon’s Celestial Compass.—2. Skeletons 
of Plesiosaurus Dolichodeirus and Ichthyosaurus communis. 
Vol, LXVI. 1. M. Ampere’s New Electro-dynamic Experiments.— 
_ @ & 3. Dr. Kipp’s Anatomy of the Mole-cricket.—4, Prof, HANsTEEN’s 
_ Paper on the Magnetic Poles of the Earth. 
ol. LXVII. 1,& 2, Prof. Hanstgeen’s Chart of the Magnetic Poles of 
the Earth-3. A Skeleton of the Plesiosaurus Dolichodeirus found at 
Lyme in Dorsetshire. 
