418 Correspondence of J. Nickles. 
sources of light, as, when they are two jets of gas, or of electric light, 
not easy of access. But it is impossible here to enter into these details. 
On forming vessels of gold by the aid of phosphorus.—The property 
of phosphorus, of precipitating certain metals from their solution has 
long been known; and gold is among the number. M. Levol has used 
this process in forming gold vessels useful in chemical research. He 
takes the perchlorid of gold, and places in it, at the ordinary tempera- 
ture, some phosphorus, moulded of a form convenient to serve as @ 
nucleus fog the vessel of gold. To give the phosphorus the desired 
i 
sary. The precipitation of the gold or the construction of the vessel 
is then begun; and it finally remains only to remove the phosphorus 
by re-melting it and washing by the aid of boiling nitric acid until the 
fabric of wonderful solidity. The author of the'process is M. Pouilly- 
He first metallises the silk, then covers it with a thin layer of copper 
stant success afier the causes of failure are studied out. ; 
Local anesthesis.—The process invented by Mr. Harris enables the 
surgeon to render insensible the part of the body to be ope ed nee 
ecting the rest of it. MM. Nélaton and Paul Dubois, two 
skillful surgeons of Paris have made with the apparatus the following 
periments. ‘After having for five minutes directed a jet of the vapor 
élaton w 
and could not use her arm. The first application of chloroform -— 
made on the armpit. The tumor, although so painful that ‘ could 
