318 SCIENTIFIC NEWS. 



tree gum, and Elecampane, form two new sections in a(^- 

 dition to chap. xix. The introduction to chap, xxi, on 

 Animal Substances; the sections on Gelatine, Albumen, 

 and Mucus ; and chap, xxiv, of the more complex Animal 

 Products, may be considered as new. Indeed every chapter^ 

 in Part I has received very considerable additions, parti- 

 cularly that on Vegetable substances; and scarely a page 

 will be found without some alteration or amendment. In 

 the 2d Part of the work, the Analysis of Minerals and 

 Mineral Waters, and in the 3d, the Application of Tests 

 to various useful Purposes, much less was to be done; 

 yet these have not been left unimproved, particularly in 

 one important point, the detection of arsenic in persons 

 supposed to have been poisoned. In an Appendix are given 

 all the discoveries in chemistry, that occurred during the 

 proo-ress of the work through the press, even up to those of 

 Mr. Davy, that are to appear in the 2d part of the Phil. 

 Trans, for the present year. Five or six new tables have 

 been added to the u€eful collection in the preceding edi- 

 tion, two or three improved ones have been substituted for 

 some of the former, and a few necessary corrections have 

 been made in others. An additional plate too is given, 

 so that the series now comprehends every article of appa- 

 ratus essential to the pursuit of experimental chemistry. 



Trentise on Mr. W. Moore, of the Royal Military Academy, will 



the doctrine of pQjjjIgj,, in the vear 1811 a Treatise on the Doctrine of 



fluxions an- ^ " ,, . n • /. i 



plied totmli- Fluxions, with its Application to all the most useful parts 

 tary and nava! ,,j- ^^^ YruQ Theory of Gunnery ; The Motion of Rockets, 

 science. indifferent Mediums; the Blowing up of Bridges, For- 



tifications, kc; and several other new and important 

 matters connected with Military and Naval Science. The 

 Fluxions will be treated in the most easy manner, that 

 the subject will admit; and the same correct principles 

 observed thronsi,hout the performance; a thing which no 

 Author in the English Language, that I am acquainted with, 

 has done. The whole will be printed in 1 Vol. 8vo, and 

 will be particularly adapted for aW Military Institutions of 



eminence. 



In 



