Miscellanies. 365 
Now if we calculate the values of n which I call the logarithmic 
module of the elastic force of steam, by the table of elastic forces 
prepared by the Institute and published in the physique of M. Pou- 
illet, we shall find a mean value of n which will be n=0.17, the 
other values differing very little from this, the formula becomes 
O.17x 
og. F = log. 160" +774 6.030 
— 
In a memoir which I presented to the Institute in the month of 
February, 1828, and referred to the committee on the measurement 
of high temperatures in steam engines, I have shewn how the mod- 
ulus of the vapors of other fluids may be found and their density 
calculated, and I found that the maximum of the elastic force of wa- 
ter takes place at a temperature of about 770°, at which its density 
is found to be nearly equal to that of the fluid in contact, the pres- 
sure rising to more than 4000 atmospheres. 
15. New Scientific Journals in Great Britain. Ep.—We have 
received the first number of a spirited and able Journal published 
January 1st, 1835, at Bristol, England, by Geo. T. Clark, entitled 
the West of England doumal of Science and Literature—to be con- 
tinued quarterly. 
This work contains sia posta original papers by able men, and 
various miscellaneous information. It will, we doubt not, prove an 
important auxiliary to the journals of London and Edinburgh, and 
will infuse vigor into that part of the kingdom. 
A new Feiuttiel appeared at the above date in London, a 
Records of General Science, by Robert D. Thomson, M. D. wi 
the assistance of Thomas Thomson, M. D. Regius Professor of 
Chemistry in the University of Glasgow. We cannot doubt that 
in such hands this new journal must prove a valuable acquisition to 
science. The present number contains an important paper by Prof. 
Thomas Thomson, on calico printing, and the selections from for- 
eign journals are copious and various. 
16. Report on the fresh water Limestone of Burdie House, near 
Edinburgh, by Dr. S. Hibbert—We have received from the au- 
thor his valuable memoir of 114 pp. quarto, with numerous plates. 
The existence of fossil Saurian fishes, some of them of enormous 
size, beneath the coal formation, is now fully established; and Dr. 
Hibbert has described and elucidated the interesting facts, respecting 
