This Day is published. Price IGs. in Boards, 



A N ESSAY on CHEMICAL ANALYSIS ; chiefly translated from 

 nL the Fourth Volume cf the last Edition of the " Traite de Ckimie E14- 

 lentaire oi h. J. Thenard," with Additions, comprehending the latest 

 )iscoveries and Improvements in this Branch of the Science. With Plates. 



By JOHN GEORGE CHILDREN, F.R.S.&c&c.&c. 

 Printed and Sold by W. Philjips, George-yard, Lombard-street; 



This Day is published, Price S/. lOj. 



TRANSACTIONS cf the GEOLOGICAL SQCIETY. Volume 



the Vth. Part the First 

 Printed and Sold by W. Phillips, George-yard, Lombard-street. 



ENGRAVINGS. 

 Vol. LI. A Plate illustrative of I^t. Capel Lofft's Paper on the 

 robabihty of Meteorolites being projected from the Moon.-^Two 

 »tes : one, of Mr. H. Tritton*s Improved Apparatus for Distillation ; 

 liinother, of the Figures in Bradley's Gardening illustrative qf the At- 

 lie on the Kaleidoscope. — A Place illustrative of Mrs. Ibbet/'s's Pa- 

 'onthe Anatomy of Vegetables; and Mr.TREDGOLD's on Reveteinents< 



Tol. LII, A Plate illustrative of Mr. Upington's Electrical In- 

 jser for the unerring Manifestation of small Portions of the Electric 

 lid. — A Plate illustrative of Mrs. Ibbetson's Paper on tlie Fructifica- 

 '; of Plants. — A Plate illustrative of the Rev. John Michell's Theory 

 lie Formation of tpe Earth, — A Plate illustrative of Capt. Kater's 

 icle on the Pendulum ; and New Apparatus for impregnating Liquids 

 \ Gases. — A Plate illustrative of Sir H. Davy's Apparatus for Vola- 

 ition of Phosphorus, and Mr. Smith's Essay on the Structure of the 

 snous Fangs of Serpents. 



fo\. LIII. A Plate illustrative of Dr. Ure's Experiments on Caloric, 

 Luckcock's Paper on the Atomic Philosophy", and Mr. Bolton's 



Purification of Coal Gas.-— A Plate representing Mr. Rennie's 

 ratus employed in his Experiments on the Strength of Materials; 

 he Marquis PvIdolphi's Improvement on the Gas Blow-pipe. — A 



illustrative of Mr. Meikle's Paper on Calorific Radiation; Mr. 

 ^*s on the Purification of Coal Gas; and Mr. Hughes's on ascer- 

 _ Distances. — A Plate illustrative of Dr. Olinthus Gregory's 

 Jjon the different Rates of Pennington's Astronomical Clock at the 



ofBalta, and at Woolwich Common, 



(LIV. A Plate illustrative of the Menai Bridge. — A Plate illus. 



cf Mr. Lowe's Description of a Mercurial Pendulum. — A Plate 



Itive of Mr. Hare's Calorimotor, a new Galvanic Instrument. — A 



illustrative of Captain Sabine's Paper on Irregularities observed in 



direction of the Compass Needles of the Isabella and Alexander in 



^ Voyage of Discovery ; and Mr. Score* by's Anomaly in the V.i- 



of tJie Magnetic Needle as observed on Ship, board. 



