Scientific Books, tyc. 77 



•To T. Bon nor, of Monkwearmouth Shore, Durham, merchant, for 

 improvements on safety-lamps. — 4th of December. — 6 months. 



To W. Fawcett, of Liverpool, and M. Clarke, of Jamaica, for im- 

 proved apparatus for the better manufacture of sugar from the canes. 

 — 4th of December. — 6 months. 



SCIENTIFIC BOOKS, &C. 



A small work, entitled " The Circle of the Seasons," has just been 

 published by Mr. T. Hookham, of Bond-street, in which the average 

 day of flowering of most of our common garden plants throughout the 

 year is noticed, under its respective day; and a short account of other 

 phenomena is added, with some popular observations on the weather, 

 &c. &c. The work is in one small volume 12mo., and intended for 

 a daily companion to the popular botanist out of doors. 



Polariscope, — an instrument for observing some of the most inter- 

 esting phenomena of polarized light. Made and sold by W. Cary, 

 Strand. The principle of this instrument was, we believe, first dis- 

 covered and described by Biot, and its form we observe is nearly the 

 same as one which has been described by Herschel. We conceive 

 that Mr. Cary has rendered an acceptable service to science by ma- 

 king these instruments for sale, as it will place the important and in- 

 teresting subject of polarized light within the reach of a greater num- 

 ber of inquirers than would otherwise have had an opportunity of 

 studying it. 



A Tabular View of Volcanic Phaenomena, comprising a list of 

 the burning mountains that have been noticed at any time since 

 the commencement of historical records, &c. &c. By Charles Dau- 

 beny, M.D.F.R.S. Professor of Chemistry in the University of Ox- 

 ford. This is an extremely useful accompaniment to the author's work 

 on Volcanos. It consists of three parts : 1st, A list of the countries 

 in which volcanos occur ; 2ndly, A chronological list of volcanic 

 phaenomena j 3rdly, A view of the comparative heights of volcanic 

 mountains. The just estimation in which Dr. Daubeny's work is 

 held, is of itself a sufficient recommendation of the present tabular 

 view, which in addition to the information already mentioned, con- 

 tains an account of the geological nature of the various volcanic 

 mountains. 



A new weekly Medical Journal, under the title of " The London 

 Medical Gazette," being a journal of medicine and collateral sciences, 

 was published on Saturday, December 8. 



A short series of Popular Lectures on the Steam-engine, by Dr. 

 Lardner, Professor of Natural Philosophy in the new University, is 

 announced for publication in a few days. The author professes to 

 have stripped the subject of all its technicalities, and to have presented 

 it in such a form that readers totally unacquainted with mechanical 

 science may readily comprehend the construction and operation of 

 the steam-engine, as well as the most interesting circumstances con- 

 nected with the history of its invention and progressive improvement. 



METEORO- 



