: ve" . 
Chemistry and Physics i ‘lil 
Olisma plantago, Meudon, ‘ . otis traces. 
Stratiotes aloides, pond, Marl Ys ‘ ‘ , ‘ ‘ a 
Acorus Calamus of commerce, ‘ ‘ é é “ 
Vehonion ‘becca abunga of commerce ‘ ‘ ff 
Phellandrium aquaticum of oemmerse, ‘the fruit, sz 6 
Inula helenium of commerce, eo edie " 
Symphytum officinale of commerce a. 
Rumex nemo orosus, swainp on the Seine, near Neuilly, 
Potentilla anserina, 
Potentilla supina, rnvehs St. Quentin, aye ° 
Polygonum hydropiper of commerce, 
Mr. Chatin concludes :— 
(1.) That those Pen growing in running waters, or on the borders 
of large bodies of water which may be strongly agitated by the winds, 
contain more iodine ion those of stagnant waters 
(2.) That the a is very small in species that are imperfectly 
submerged or only at intervals. 
(3.) That the nic of iodine appears to be independent of the 
nature of the plant or its place in the natural system 
he anti-scrofulous effects - the ia Veronica, Phellandrium, &c., 
“are explained by the presence of iodin 
6. Analysis of certain gold-colored Bronze Antiquities found at 
Dowris, near Parsonstown, in the King’s Co age Ch — by Tuos. L. 
Cooxe, (Royal Irish Acad. ; Chem. ns No. 1 76.)—The arti- 
cles were part of a celt and a portion of a oem ne golden hue of 
these ancient bronzes tt to some the idea of an admixture of 
zine, an ingredient never yet observed in ancient bronzes. Such was 
not the fact, as may. bo.scon from niie analysis. The specific gravity 
copper, tin and lead, whisk it is unnecessary to repeat | at presen nt. 
ted of 
The celt consisted of 
Copper, “ 85-232 ° a 79° 345 
Oat ‘ 13-112 . “ 10°873 
Lead, ‘ 1°142 s . 9-115 
Sulphur and PEPIN, 0°150 ‘ . — 
Loss 0°364—100. , 0-667=100. 
roar a nia solution in small Woulf’s bottles. He al 
the very fine qualities of toughness and of hardening acquired by this 
alloy when hammered, enabling it to cut not only flesh but even bone. 
- Mannite, its atomic Weight and Compounds; by Dr. W. Kyor, 
(Pharm-Cent. Sa Nov., 1849, and Jan., 1850; Chem. Gaz., Mar. Ist, 
avre are mere si atede: of basic lead salts with uncombined mannite, 
and therefore give no aid in determining the atomic weight. No combi- 
nations with acids seem to give a favorable result—but at last a com- 
nd of formic acid was obtained, curious for the manner of its for- 
mation. Crystallized owalic acid and mannite fused together at 230°, 
*"s 
