* + ? . ae : . 
bad a " . * « 
28 © Proceedings of the American Philosophical Society. 
/ s % a . 7 be © ft : 
The iron casing, used to protect the bottle, had been exposed to the 
fire during three processes ; yet, excepting at the lower corner, it did not 
appear to be injured’ .With slight emendation, and with the protection 
of a stout disk of malleable iron, situate so as to form a basis, Dr. Hare 
had no doubt it might be used for several more operations. 
In distilling the potassium from the tube, “ per descensum,” as descri- 
bed in his account of the process already referred to, the cap converging 
to a tapering tube was screwed on to that end of the receiver which was 
nearest the bottle; and, of course, this end was the lowermost in the dis- 
tillatory process. This arrangement was preferable, as it prevented the — 
loose deposition always found at the end of the tube farthest from the 
fire, from falling into the naphtha employed together with the potassium. 
Agreeably to a provision of the by-laws, the list of surviving members 
of the Society was read. The number is 316; 216 of whom are resi« 
dents of the United States, and. 100 in foreign countries. - 
Feb. 6.—Mr. Saxton laid before the Society several copies of medals, 
produced by the galvanic process of Prof. Jacobi, of St. Petersburgh, and 
a small vase, obtained by a similar process, using a fusible metal matrix, 
which was removed when the form was obtained, . 
» Mr. Lea exhibited nearly forty specimens of representations of plants 
and shells by the photographic process of Talbot, modified by Mr. Mungo 
Ponton, of Edinburgh. They ‘were prepared by his son, Mr. Carey Lea, 
and were entirely successful; the minute parts of the plants and the out- 
lines being perfect. 
Feb, 21.—Mr.-Lea read a paper, entitled “ Description of Nineteen 
new Species of Colimacea,” from his collection. T'hese were recently 
received, and chiefly from Mr. W. W. Wood, now of Manilla. 
Bulimus Woodianus,* Bulimus bicoloratus, Bulimus subglobosus, Buli- 
mus gracilis, Bulimus carinatus, Bulimus virido-striatus, Bulimus Virgin- 
eus, Bulimus Liberianus, Cyclostoma Woodiana, Carocolla bifasciata, 
Helix cepoides, Helix Blainvilliana, Helix Lamarckiana, Helix luteo-fas- 
ciata; Helix ferruginea, Helix Cuvieriana, Helix Blandingiana, Helix 
entered into combination with phenomena of combustion, while the silicon 
was deposited or left in combination with potassium and its fluoride. ’ 
* Want of room forces us to leave out the descriptions of these nineteen new 
ies, 
