OUTLINES OF PERIODICAL LITERATURE. 167 
ration of his return from Southern Africa, after having executed a minute 
astronomical survey of the southern hemisphere; a notice of a French 
memoir on the action of light on solution of cyanogen; Mr. Walter’s pro- 
cess for preparing bichromate of perchloride of chromium; and meteorologi- 
cal observations and tables. 
Auve6ust gives you, asa beginning, Mr. Ivory’s problem on the conditions 
of equilibrium of a homogeneous planet in a fluid state; and Mr. Lubbock’s 
theorem on a property of the conic sections. Seven figures on a plate illus- 
trate Mr. Waldie’s experimental researches on combustion and flame, which 
he conducts on a new method of investigation; and Professor Forbes’ re- 
searches on heat embrace discussions on the unequally polarizable nature of 
different kinds of heat ; on the depolarization and the refrangibility of heat, 
with figures in illustration. Dr. Apjohn details the means he employed for 
determining the nature ofa new compound, consisting of iodide of potassium, 
iodine, and the essential oil of cinnamon, originating in an unchemical medical 
prescription. In his researches on the composition of coal, Mr. Richardson 
subjected four different kinds from six different fields—the splint, cannel, 
cherry, and caking—to the test of analytical experiment : here the results 
are exhibited. Mr. Griffin’s arithmetical analysis of mixed salts of potas- 
sium and sodium, precedes the second part of Mr. Binks’ second communi- 
cation on voltaic electricity and voltaic batteries, and then you arrive at the 
proceedings of the Royal Society.. Under this head stand three sketches ; of 
an account, by Mr. Thomson, of a line of levels carried across northern 
Syria, from the Mediterranean Sea to the river Euphrates, with Mr. Ains- 
worth’s geological and botanical notes; of Professor Faraday’s supplemen- 
tary note to the eleventh series of his experimental researches in electricity; 
and of Mr. Ivory’s theory of astronomical refractions, which is unfolded in 
considerable detail. The miscellanies include Mr. Donné’s discovery of the 
cause of circulation in plants; and, of this, the Chara, or Stonewort, is a re- 
markable example: of Mr. Boussingault’s investigations to ascertain whether 
plants absorb the azote of the atmosphere; of Dr. Rees’ paper on the pro- 
portion of animal and earthy matter in human bones; and of Professor 
Kame’s formulz on the ammoniacal and other basic compounds of the copper 
and silver families. Then, as usual, the meteorological observations and 
tables prepare you to welcome the arrival of 
SrerremBer.—VFor its first article, this month has Professor Schcembein’s 
discussion of M. Fechner’s views of the theory of Galvanism, with reference 
particularly to a circuit including two electrolytes, and to the relations of 
inactive iron ; and for the next you have Mr. Binks’ second communication 
on the phenomena and laws of voltaic electricity, and on the construction of 
voltaic batteries. Professor Forbes then treats of the refrangibility of heat, 
as the third series of his researches on heat, and these are illustrated with 
two plates. A medical paper stands next in order: it is from the pen of 
Mr. Gulliver, and consists of experimental observations on the frequent 
presence, and on the effects of, purulent matter in the blood, in diseases 
attended by inflammation and suppuration. He thinks his experiments will 
render it probable that suppuration is a sort of proximate analysis of the 
blood. Instructions for the qualitative analysis of soluble salts, are furnish- 
ed by Mr. Griffin, in tables of precipitants for metals and for acids, with 
supplementary tests, and an easy method of applying sulphuretted hydrogen 
