76 Scientific Books. 



taking, and a voyage of four months, perhaps ma)', by the aid of 

 such hght steam-vessels as these we have been alluding to, be per- 

 formed in two or three weeks. Surely, when we consider that it 

 is not more than three years since the first steam-vessel was seen 

 in the river Hoogly, and when we consider that nothing was done 

 for a considerable time after her appearance towards the accelera- 

 tfon of steam-navigation in India, the actual state of it at present is 

 a just subject for congratulation. — Col. Press Gaz. June 9. 



SCIENTIFIC BOOKS. 



Just Published. 



General Directions for Collecting and Preserving Exotic Insects 



and Crustacea : designed for the use of residents in foreign countries, 



travellers, and gentlemen going abroad. With illustrative plates. By 



George Samouelle, A.L.S. 



Preparing for Publication. 

 A New Edition of Meteorological Essays, by James Frederick 

 Daniell, Esq. F.R.S. This edition, — besides the former Essays upon, 

 I. The constitution of the atmosphere. II. The construction and 

 uses of a new hygrometer. III. The radjation of heat in the at- 

 mosphere. IV. The horary oscillation of the barometer. V. The 

 climate ofLondon, with corrections and additions, — will comprise 

 Essays upon the following subjects : VI. Evaporation as connected 

 with atmospheric phaenomena. VII. Artificial climate considered 

 with regard to horticulture. VIII. The connexion between the 

 oscillation of the barometer at distant places. IX. The insinua- 

 tion of air into the Torricellian vacuum, and the means of preventing 

 the gradual deterioration of barometers. It will also contain various 

 meteorological observations and remarks, and numerous tables, 

 plates, and diagrams. 



On the 1st of February, with numerous engravings on wood, 

 Dr. Arnott's Work on General and Medical Physics. It is a 

 system of Natural and Experimental Philosophy, with strictly 

 scientific arrangement, but made easily intelligible to those who 

 have never learned, or who have forgotten the mathematics. In 

 addition to a great mass of illustrations from general nature and 

 the arts, adapted to the present more comprehensive scale of a li- 

 beral education, it comprises many very interesting particulars 

 furnished by examination of the animal body under health, disease, 

 and medical treatment ; and among these are disquisitions and sug- 

 gestions. 



FOREIGN BOOKS OF SCIENCE LATELY PUBLISHED. 



Memoiresur I'lmpossibilite de quelques Equations indeternoinees 

 du 5' degre ; par G. Lejeune Dirichlet. 



Journal fur die reine und angewandte Mathematik, von M. A. L. 

 Crelle. 



Observations Astronomiques publiees par le Bureau des Longi* 

 tudes de Paris. 



Correspondence Mathematique et Physique ; par MM. Gamier 

 et Quetelet. 



Suir Applicazione de' Principii della Mecanica Analitica, &c ; di 

 Gabrio Piola. A Geolo- 



