466 Analyses of Books. . —DEe. 
liquid form, at the temperature just mentioned, it is of specific 
gravity 1:98. No. 3 is liquid at 55, and of specific gravity 1-58. 
No. 4 is liquid at about 105°; on cooling slowly to 60°, it depo- 
sits some crystals which are four-sided prisms, composed 
of facets alternately broad and narrow.” 
Some circumstances are here mentioned which prove that cor- 
rosive sublimate and muriate of ammonia have a strong affinity 
for each other, and among them the results of an experiment, 
from which “ it would appear that corrosive sublimate is about 
17 times more soluble in a saturated solution of muniate of am- 
monia than in water, and not 30 times, as is stated by some 
authors.” 
“ The results of these experiments,” continues Dr, D. “led 
me to make trial of some other muriates, as of baryta, magnesia, 
potash, and soda.” ‘The trials with these substances are then 
described in detail, and it is mquired respecting their results 
toward the conclusion of the paper, ‘‘ May not the compounds: 
of corrosive sublimate and common salt, muriate of magnesia 
and baryta, respectively, be considered as constituted of one 
proportion of each ingredient? The definite nature of the com- 
pounds with muriate of ammonia and potash are, perhaps, more 
questionable.” : 
It is next remarked, that all these compounds exhibit the pro- 
perties of the most active constituent, and the paper concludes 
as follows : “ It would appear, from the preceding experiments, 
that those menstrua which have a strong affinity for corrosive 
sublimate, prevent its decomposition when exposed to light, as 
the muriates, alcohol, and ether; and, on the contrary, that 
those solvents which exercise a weak affinity on it, and have a 
stronger aftinity for muriatic acid, as water, and exceedingly 
dilute alcohol, aid the decomposing power of light. The prac- 
tical application to be deduced, relative to the formula for the 
liquor hydrargyri oxymuriatis, is obvious, and does not require 
to be pointed out.” 
XXVII. On the State of Water and Aériform Matter in Cavi- 
ae ound in certain Crystals. By Sir Humphry Davy, Bart.’ 
RS. 
This novel investigation of a contested subject in geology we 
purpose to insert at large in the Annals. i 
XXVIII. Some Experiments on the Changes which take. Place 
in the fixed Principles of the Ege during Incubation. By Wil- 
liam Prout, MD. FRS. 
An abstract of this very interesting communication will shortly 
appear in the Annals. is 
XXIX. On the Placenta... By Sir Everard: Home, Bart. 
VPRS. 
This paper relates, primarily, to certain operations of utero~ 
gestation; to the means employed by nature to prevent any two 
different genera from breeding together ; to the period of utero- 
