Scientific Books, dye. 235 



— On Attraction, by Ch. Fred. Gauss.— Solutions to a curious Pro- 

 blem, by Mr. Lecbmutz. — Cambridge Problems, 1821 — 1826. 

 Together with a set of twenty questions, to be answered in Number 

 XXI. 



A Manual of Natural and Experimental Philosophy, beautifully il- 

 lustrated, has just been published by C. F. Partington, and dedicated 

 to the London Institution. It is well calculated to assist those who 

 attend the Lectures, and not less so to give those who cannot attend 

 a vast mass of useful information. 



Observations on the Cruelty of employing Climbing-boys in sweep- 

 ing Chimneys: and on the Practicability of effectually Cleansing 

 Flues by Mechanical Means. With Extracts from the Evidence be- 

 fore the House of Commons : &c. &c. 



Flora Londinensis. Nos. 35 and 36 of the New Series. — These 

 Numbers, containing Twelve rare and highly interesting British 

 Plants, complete the new edition of this splendid Work, which con- 

 tains upwards of 650 accurate Delineations of Indigenous Plants. 



A Manual of Electro-Dynamics, chiefly translated from the Manual 

 d'Electricite Dynamique j or, A Treatise on the Mutual Action of 

 Electric Conductors and Magnets of J. F. Demonferrand j with 

 Notes, &c. &c. by James Cumming, M.A. 8vo. 



Reports of Medical Cases, selected with a view of illustrating the 

 Symptoms and Cure of Diseases by a reference to Morbid Anatomy j 

 embracing Dropsy, Inflammation of the Lungs, Phthisis, and Fever. 

 By Richard Bright, M.D. RR.S. &c. 4to. with 16 coloured plates. 



Popular Lectures on the Steam Engine, in which its Construction 

 and Operation are familiarly explained ; with an Historical Sketch of 

 its Invention and Progressive Improvement. By the Rev. Dionysius 

 Lardner, LL.D. 12mo. 



Preparingfor Publication. 



Capt. John Ross, K. S. R. N., is about to publish a Treatise on 

 Steam Navigation, Illustrated with Plates, comprehending a History 

 of the Steam-Engine, its Principles, an Explanation of the Terms, and 

 an Account and Examination of the Improvements applicable to Naval 

 Purposes. — A Complete System of Naval Tactics peculiar to Steam 

 Navigation as applicable to Naval Warfare and Commerce, including 

 a comparison of this System with all others. — The Effects of such a 

 System in National Defence. — Rules and Regulations calculated to 

 prevent Accidents by Explosion and Collision. — An Alphabetical Ar- 

 rangement of Technical Terms used in Steam Navigation j and a 

 Chronological Table of the Progress of the Steam Engine, from the 

 most ancient period of its invention. — The Description and Use of 

 the Royal Clarence Sextant, an Instrument recently invented by the 

 Author, and highly useful in Steam Navigation, for ascertaining the 

 exact distance of Ships from Land, or any object in view: with Tables 

 applying the principle to a Common Sextant. 



An Essay on the Application of Mathematical Analvsis to the 



2 H 2 Theories 



