C 467 ] 

 JLXX. Notices respecting New Books, 



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.R. LEYBOtJRN, of the Rov^.! Military College, has just 

 published the tenth number of the Mathematical Reposi- 

 tory» coutaining solutions to the mathematical questions 

 Uroposed in the eighth number, and a scries of new 

 questions to be answered in a subsequent ??an\ber; an 

 essay on polygonal numbers ; a new demonstration of the 

 binomial theorem; an illustration of the forty-seventh pro- 

 position of the second book of the Principia ; a curious 

 indeterminate problem; solutions to a curiouF. problem in 

 dynamics ; and a continuation of Le Gendre's memoir on 

 elhptic transcendentals. 



Mr. W. Moore, of the Royal Military Academy, has in 

 ft good state of forwardness, A Treatise on the 'doctrine of 

 fluxions; with its application to all the most useful parts 

 of the true theory of gunnery, and other very important 

 matters relating to military and naval science. The fluxions 

 will be preceded by such parts of the science of mechanics 

 as are necessary for reading the wor^c without referring to 

 other authors ; and the whole will be so arranged, that any 

 person moderately skilled in algebra, geometry, and trigono- 

 metry, and having a knowledge of the most common pro- 

 -perties of the conic sections, may proceed to these inquiries 

 •v/iih every interest and success. The whole will be printed 

 in one volume octavo, and will be particularly adapted to 

 -all military institutions of eminence. 



Mr. Marrat, of Boston, Lincolnshire, has in the press 

 a work on mechanics, which is principally intended for 

 •the use of schools, $cc. 



The author*s principal aim in composing this work, has 

 been to make the subject easy to be understood by students, 

 •to facilitate the business of instruction, and to condense as 

 much useful matter as possible into a small compass. In 

 order also to blend theory with practice, and to remove the 

 irksomeness which students mostly complain of in study- 

 ing the theory, a great number ofexarnples w\\\ be given 

 in ahnoyt every section ; these will be found of service iri 

 fixing the principles in the mind, and cannot fail of ren- 

 dering the subject more easily attainable, ^rid_, conse- 

 quently, of creating ;i stimulus to further ex^rtiqns. 

 , The work will be divided into five books ; the first of 

 which treats of statics, the second of dynamics^ the thir^ 



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