120 Scientific Intelligence. 
be inferred that if fluorine be present in the waters of the Firths of 
Forth and Clyde, and in the German Ocean, it will be found universal- 
ly present in the sea. Mr. Middleton, before 1846, came to the con- 
clusion that fluorine must be present in sea-water, since it occurred, as 
he had ascertained, in the shells of marine mollusca. Silliman, — 
by the United States expedition from the Pacific Ocean. he author 
has found fluorine abundantly ete in the teeth of the Walrus, which 
points to its existence in the Are cean; and it seems so invariably to 
associate itself with phosphate of nuan that it may be expected to occur 
in the bones of all animals marine and terrestrial. The author has 
found fluorine likewise in kelp from the Shetlands, but much less dis- 
tinctly than he anticipated. Glass plates were only corroded so far as 
to show marks when breathed upon. Prof. Voelker, also, was kind 
enough at the author’s request to search for fluorine when analyzing the 
ashes of specimens of the sea pink (Statice Armeria), which had grown 
close to the sea shore, and contained iodine, and found fluorine in the 
plant. When all these facts are considered, it is not too much, the au- 
thor thinks, to urge that fluorine should now take its place among the 
acknowledged constituents of sea-water. He has entered at length into 
the consideration of the ne ag distribution of this element, and into 
other details connected with it, in a paper in the * Transactions of. the 
Royal ere of Edinburgh, vk xvi, part 7, and in a communication 
made to the Association at its Southampton meeting. The Statice Ar- 
meria oti veceualaly be added to the list of plants containing fluorine, 
and so may the Cochlearia Anglica, in specimens of which obtain 
from the Bass Rock, and analyzed in Dr. Wilson’s laboratory, Dr. Voel- 
_ker has also detected this element 
Specimens of ae glass were e shown to the Section in illustration 
of this communicatio 
Prof. Forchammer eat eee the results of Dr. Wilson. He had 
instance. He had also examined man ls and marine products 
from various localities, and they all gave the same body—the ss 
of which was always greater in sea than in land animals. Mr. Pearsall 
thought he had detected fluorine in many waters from springs and pss 
16. On the Artificial Production a certain Crystallized ince 
oc one Pte hs of iy Oxyd gs itanium, and Quartz ; by = 
UBR 
apparatus, suitable for the production of the stannic vom he em- 
ployed in its place the chlorid of that metal—the great analogy ©X- 
isting between the fluorids and chlorids ssi this prc of the 
results obtained on the last to the correspo flu 
nl reee 
Nee eee 
