340 
SELECTED ARTICLES. 
colored product. This product will, by three repetitions of 
this process, afford creosote as limpid as water, of an oleagi- 
nous consistence, strongly refracting light, of the specific 
gravity of 1.007, and boiling at 205° R. 
The creosote obtained by the method of M. Cozzi, has a 
peculiar odor and burning taste; it coagulates albumen, has no 
action upon the paper of turnsol, or upon tumeric paper; it 
is soluble in water, in acetic acid, and in alcohol; 100 parts of 
water at 20° dissolves a quarter part. 
M. Cozzi has proven that his process is economical, and 
that as much creosote as would cost eighteen francs, by another 
method, may be obtained 13 fr. 50, by his method. 
M. Cozzi says that creosote may be used: 1. to preserve 
animal aliments, and to prevent the putrefaction of dead bo- 
dies of men and animals. 2. To dissolve caoutchouc, gum 
lac, mastic, turpentine, copal, amber, and other resins, and to 
form with these solutions, coverings which do not crack, and 
varnishes which have a brilliancy not to be obtained by 
the use of alcohol and the volatile oils. 3. To dissolve color- 
ing matters and furnish solutions which may be used in dye- 
ing. 
He has already used creosote for the preservation of wood; 
the experiments on this point have been submitted to the 
Society for the Encouragement of the Useful Arts. A. C. 
Ibid. 
ART. LII.— ON THE SPECIFIC GRAVITIES OF NITRO- 
GEN, OXYGEN, HYDROGEN, AND CHLORINE, AND OF 
THE VAPORS OF CARBON, SULPHUR, ARSENIC, AND 
PHOSPHORUS. By Thomas Exley. 
After observing that each atom of common matter would 
attach to its sphere of repulsion an atmosphere of ethereal 
matter, equal, in the sum of the forces of its atoms, to the 
