\ 



Jn a few days will be published, in 1 vol. 8vo, 



A DESCRIPTION of ACTIVE and EXTINCT VOLCANOS; 

 with Remarks on their Origin, their Chemical Phfenomena, 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 

 Lectures delivered before the University of Oxford : — with much addi- 

 tional Matter. Illustrated by three Plates and by Engravings on Wood. 



By CHARLES DAUBENY, M.D. F R.S. 

 Fellow of the Geological Society, and of the College of Ph3'sicians 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. 



PHARMACOPOEIA LONDINENSIS, 

 Iterum recognita et retractata, 1824?, p. 6. 



"ACIDUM ACETICUM FORTIUS." 



vcl 

 " Acidum Aceticum e Ligno destillatum ." 



PDRE CONCENTRATED ACETIC ACID, agreeable to the Sample 

 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. Brunel's new Mode of Tunnelling, and Road- 

 way under the Thames. — 3. BECiiUEiiEL's Experiments on the Develop- 

 ment of Electricity by Pressure. —-t. Barlow's Experiments on Mr. 

 Marsh's Thermo-electric Apparatus. — 5. Mr. Seawakd's Observations 

 on Suspension Chain Bridges. 



Vol. LXIII. 1. Mr.GoMPERTz's Method of defending Ships, &c. — 

 2. Mr. R. Taylok'o Paper on the Upper Marine Formation in the Cliflfs 

 near Cromer. — 3. Dr. VValchner's Examination of Hyalosiderite; and 

 Mr. Daily's and Mr. Fraunhofer's Accounts of the Circular Micro- 

 meter. — 4-. Prof. Hare's Single-leaf Electrometer and improved Defla- 

 grators — 5. Two new Species oi Ascidia; and Awphiuma means, a new 

 Batrachian Animal. 



Vol. LXIV. 1. Seaward's Hydro-pneumatic Pump.— 2. Mr. Stur- 

 geon's Electro-magnetic Rotating Apparatus; and Mr. Haychaft's 

 Apparatus for ascertaining the Specific Heat of Gases. — 3. Fossil Remains 

 of Saurian Animals found in America. 



Vol. LXV. 1. Captain Ghaydon's Celestial Compass.— 2. Skeletons 

 of Plesiosaurus Dolic/todeirus and Jclilhyosaiirus communis. 



Vol. LXV I. 1. M. Ampere's New Electro-dynamic Experiments. — 

 2 & 3. Dr. Kidd's Anatomy of the Mole-cricket. — 4. Prof. Hanstesn's 

 Paper on the Magnetic Poles of the Earth. 



Vol. LXVII. 1. & 2. Prof. Hansteen's Chart of the Magnetic Poles of 

 the Earth.— 3. A Skeleton of the P/esiotourus Dotichodeirus found ;it 

 Lyme in Dorsetshire. 



