Blowpipe with continued Blast. 121 
chemist, relating to the poisonous effects of carbonic oxyd. Having 
een for many years occupied with this gas, he has proved upon him- 
self its deleterious qualities; and he announces that he is at this ver 
thorax. The lassitude continues general for several days; sleep be- 
comes heavy and troubled, and there are severe cramps in the legs and 
toes. These effects are continued for months; the person appears sad 
and dejected ; any noise produces a neryous shock like an electric dis- 
charge, 
The antidote used by M. Chenot is gum or marsh-mallow water ; 
bathing gives much relief. These remedies alleviate but do not reme- 
dy the effects of the poison. For several weeks, now, since M. Chenot 
inhaled this gas, through the breaking of a manometer, he has suffered 
from an insurmountable feebleness and loathing; and the least touch, 
even his own, produces on him severe irritation. 
Blowpipe with a continued Blast.—The blowpipe here figured has the 
merit of enabling the operator to keep up a continued blast, without the 

a Tequired for the ordinary blowpipe, and without fatigue. M. 
<3 Luca observes that it is only necessary to as in an ordinary 
fe, @ peculiarity of the blowpipe consists in the addition of a bag 
ope canised india rubber, G, having within a valve A (fig. 3), which 
pens from without inward, and closes from within outward, and 1s 
7 Tubber bag; in figure 2, the cylindrical recipient Is rem 
OND Serres, Vol. XVIII, No. 52.—July, 1854. 16 
