1815,] Proceedings of Philosophicat Societies. 223 
Steam: in four Parts. 1. On the Effects of Heat, the be dae, 
measuring it, the comparative Quantity of Heat produced by diffe- 
rent Kinds of Fuel, Gas Light, Sc. 2. On heating Mills, Dweli- 
ing-houses, Baths, and Public Buildings. 3. On drying and heat- 
ing by Steam. 4. Miscellaneous Observations. With many useful 
Tables. Illustrated by Plates. With an Appendix: containing 
Observations on Chimney Fire-places, particularly those used in 
Lreland—on Stoves—on Gas Lights—on Lime-Kilns—on Furnaces 
and Chimneys used for rapid Distillation in the Distilleries of Scot- 
land—on improved Boilers for evaporating Liquids. By Robertson 
Buchanan, Civil Engineer.—Glasgow, 1815. 
This ample title-page is sufficient to inform the reader what he 
may expect to find in this useful little work, which is of too miscel- 
laneous a nature to admit of an analysis within any reasonable com- 
pass. The most valuable part of it consists in the details with which 
it furnishes us respecting the modes of warming buildings by steam 
employed by manufacturers in different parts of Great Britain. 
a 
Ill. A Practical Treatise on Gas Light: exhibiting a summary 
Description of the Apparatus and Machinery lest calculated for 
Hluminating Streets, Houses, and Manufactories, with Carbureted 
Hydrogen or Coal Gas: with Remarks on the Utility, Safety, and 
General Nature of this new Branch of Civil Economy. By Frede- 
rick Accum, Operative Chemist, Lecturer on Practical Chemistry, 
on Mineralogy, and on Chemistry applied to the Arts and Manu- 
factures, Member of the Royal Irish Academy, Fellow of the Lin- 
nean Society, Member of the Royal Academy of Sciences at 
Berlin, &c. &c.—London, 1815. 
This contains a perspicuous and popular view of the subject, and 
may be of considerable utility to those who, without being ac- 
_quainted with chemistry, wish to have some general notion of the 
nature of gas lights, 
ArTicLe XII. 
Proceedings of Philosophical Societies. ~ 
ROYAL INSTITUTE OF FRANCE. 
Account of the Labours of the Class of Mathematical and Physical 
Sciences of the Royal Institute of France during the Year 1814. 
(Continued from yp. 149.) 
M. Auguste de St. Hilaire, several considerable botanical disser- 
tations by whom we have formerly mentioned, has given us one this 
year on different families of plants, in which the placenta, that is 
