Proceedings of the American Association. 243 
of chlorine gas in the sun’s light; and chlorid of carbon pro- 
uced C,Cl,, or perchlorinized formene 
In the employment of chloroform as an agent to produce in- 
sensibility, too little experience has been had to enable us to form 
a just comparison between it and the common sulphuric ether 
before employed for the same purpose. It appears however thus 
far, that a much smaller portion of chloroform is required to pro- 
duce the same or even greater effects. Thirty drops on a sponge 
or amaenaneaiat are said to suffice in most cases, but we have 
cases in which. ten times that quantity was required, 
The insensibility and consequent relaxation of the patient are 
perfect, and apparently much more prolonged than in ether- 
ization. The inhalation is far more agreeable to the patient, 
and not so often attended with paroxysmal efforts at coughing. 
Further and extended — is however required before its 
true value can be fully known. Meanwhile the zeal for manu- 
facturing it will make ita onraaratinely cheap article, as there is 
hothing in its production requiring Brea aepaeiignes: 
Analytical Laboratory, Yale College, Jan. 15, 184 
Arr. XXIX.—Proceedings of the American Association of Ge- 
ologists and Naturalists at Boston, September, 1847. 
I Upon some of the Results of the Palevntoligten! Investiga- 
tions in the State of New York. 
Mr. Hatt commenced by stating that this work was commit- 
ted to his charge in the year 1843. At that time it was intended 
to ape the fossils of the entire series in a byl ir veuniis; 
* The December Srareg of the Ann. va Chim. et de Phys p. 439, contains an 
article ‘ct M. J. Isidore Pierre, “on a new chlorine Seitveiee. of Dutch liquid.” 
un erg déri ela iguear hes Hollandais. i compound 
Tepresen the formula C i. Pierre takes ifferent view of the 
on of Dolch h liquid from that presented in the text, representing it (on the 
single equivalent of hydrogen) as Cy Hy the chlorine series give aby im, is, 
C,H, aI, . 
C,H, rao 
C4 He Cly 
A H Cl, 
A Poot of which each term, under ne idueliee of an alcoholic solution of po- 
tassa, loses the elements of 1 ‘sqesealae catateted ric acid, giving t the series, 
Cy Hs, 
Cy Ha ci? 
Cc 
Ci at * of which “area es is regarded as 
the rdemonel.t type. The haiid member of this org he product of the reac- 
tion @ rapid curr of upon Bach liquid, under ine influence o the 
ss epe wend faiation gives a fluid which boils ith a 
SP. gr. ol: 662, w ging mie than ek iat 
f Sinners trang ot oars volume of Mr. Hall's Puingsinloges! Re eport was 
announced j in our last Number, page 149, of this vottime. The second volume is 
making Lifes 
Szconn ing Vol. V, No. 14.—March, 1848. 32 
