84 
MISCELLANY. 
the delirium, so far from diminishing, appeared to augment; the pulse 
became small and contracted; the respiration stertorous; and the condition 
of the patient became very alarming. Another bleeding was practised 
during the night; improvement; water acidulated with vinegar adminis- 
tered as a drink; potion with ether; purgative enema; better. 
Next day, continuance of loquacity and disorder of intellect; agitation; 
rubs his nose; pupils still much dilated; tongue red; abdomen painful; 
pulse frequent and hard. Fifteen leeches to the epigastrium ; a warm 
bath ; same drink. From this time there was progressive amelioration, 
and finally a cure. 
This observation is analogous to another reported in 1815, in the Ga- 
zette Medicale : in that case the belladonna had been taken by injection, 
and in larger dose. The resulting phenomena were nearly the same in 
both cases. P. 
Joum. de Chimie Med. 
A new Pipette, by A. Levol. — I have used, for the purpose of washing 
filters, a pipette, which is very simple, and appears to have some advan- 
tages over those which are in common use, and which, for these reasons, 
I will describe. It is composed of a small and straight tube, drawn out 
at its upper extremity, the other being inserted in a flask which contains 
the water, as in the common manner; but I add a tube, curved in the form 
of a syphon, of which one of the branches is inserted into the flask to the 
bottom, and the other remains without. It is evident, then, that, on in- 
verting the apparatus, the flow of the water will take place from atmo- 
spheric pressure, with greater or less rapidity, according to the height of 
the column of liquid; and this may be accelerated by blowing into the 
exterior branch of the syphon. This apparatus will also permit the use 
of hot water, as has been latterly recommended in the lessons at the School 
of Mines. — Ann. de Chim. et de Phys. 
Bichromate of Perchloride of Chromium. — This remarkable compound 
was discovered by Berzelius ; it was at first called perchloride of chro- 
mium, because when put into contact with water it was changed into chro- 
mic and hydrochloric acid. Its true composition was ascertained by M. 
Henrich Rose. 
M. P. Walter gives the following process for preparing this compound : 
put into a tubulated glass retort an intimate and finely powdered mixture 
of 100 parts of fused common salt, and 168 parts of neutral chromate of 
potash ; an S tube is to be put into the iubulure of the retort, through which 
there are gradually poured 300 parts of concentrated sulphuric acid. The 
action is rapid from the commencement; intense red vapors, accompanied 
by much chlorine, are disengaged. The receiver is to be kept cold to 
condense the vapor. The acid must be gradually added, or otherwise a 
