140 Notices respecting New Books. 
of a close tissue, in order to have the safety-lamp of Davy in its 
full perfection.” ‘ 
<< All my views,” adds M. Gossart in concluding, ** and those 
of the Chamber over which I have the honour to preside, in col- 
lecting and publishing these facts, are to make the proprietors of 
mines which are affected with fire-damp, fully sensible of the 
importance of the discovery of the celebrated Davy, and how 
much humanity owes to his genius. We would earnestly press 
upon them to permit no other means of lighting to be employed 
in the working of their mines, but the safety-lamp. They will 
find the use of it economical. It will enable them to recever, 
and work anew. veins of coal which the abundance of inflam- 
mable gas may have forced them to abandon. It will, above all, 
enable them to preserve their works from those calamities which 
explosion from fire-damp has till now been constantly occasion- 
ing—calamities which have too often been the ruin of many of 
them; and to save from the torments of ‘burning, and all the 
infirmities following in its train, a multitude of workmen on 
whose labours the subsistence of a great number of families de- 
pends. 
“* Happy shall we be, if we can only succeed in making our 
countrymen as strongly impressed as we are ourselves with all 
the advantages of this inestimable discovery !” 
A practical Treatise on the Use and Application of Chemicat 
Tests ; with concise Directions for analysing Metallic Ores, 
Metals, Svils, Manures, and Mineral Waters. Illustrated 
by Experiments. By Freprick AcctM, Operative Chemist, 
Lecturer on Practical Chemistry and on Mineralogy, F.L.S. 
M.R.A.S.R.S. of Berlin, &c. 3d Edition, 8vo. pp. 606. 
We are much gratified to find that the success of this valuable 
little work has been so great, as already to give us an opportu- 
nity of noticing a third edition of it; and to recognise m the 
many elaborate improvements by which it is successively distin- 
guished, a pleasing proof that the author is not insensible of the 
due return which he owes for the high share of favour which his 
labours have received from the public. Mr. Accum has in the 
present edition greatly enlarged the scale of his experiments, 
which are not confined to the illustration of the practical ope- 
rations in the analysis of such metallic ores, metals, mineral 
waters, &c. as are commonly to be met with, but extend to mi- 
nerals which occur but rarely, and the proper mode of analysing 
which, itis only therefore of so much the greater consequence to 
know distinctly. Two new plates have also been added, descrip- 
tive of the instruments most necessary for the analysis of bodies 
by means of re-agents or tests, The work has upon the he 
een 
