and Masses of Meteorie Iron, &c. 19 
1814, 5th November. Every meteoric stone that fell near the 
Doab in India was surrounded by a small heap of dust. 
? 1815, towards the end of September. A probable fall of 
dust in the Southern Indian Ocean, an extent of more than 50 
miles in diameter having been found covered with it. 
1816, 15th April. Tile-red snow from red clouds, in some 
parts of Northern Italy. 
1818. Captain Ross found red snow on the north coast of 
Baffin’s Bay. Notwithstanding the very defective analysis (in 
which it was supposed, from ignorance of the analyses pre- 
viously made of red meteoric dust, that the colouring matter 
must be the excrement of certain birds), they found, besides 
other substances, oxide of iron and silica, but which, owing to 
the false preconception, they considered as something adven- 
titious. ‘The oxide of iron seems to be the principal colouring 
substance; and the kind of mould called uwredo nivalis, which 
was found by the microscope in the long-preserved snow-water, 
was probably of an infusorial nature, and produced in it at a 
subsequent period. 
* Red snow was also found in 1817, on Mount Anceindaz 
in the south-east of Switzerland, by M. de Charpentier, di- 
rector of the salt-manufactory of Bex, who was so kind as to 
give me the residue he collected from a flat rock ; which, how- 
ever, seems to have been mixed with some fragments of lichen. 
Professor Steinmann in Prague, and Professor Ficinus in 
Dresden found in it (as had been found in other meteoric 
dust), besides a volatile substance which leads us to infer the 
presence of some organic matter, oxide of iron, manganese, 
silica, alumina, lime, and a little sulphur. Prof. F. discovered 
also a trace of lime, but no traces of nickel, chrome, or cobalt. 
I have given some accourt of this inGilbert’s Annals, vol. xviii. 
p- 356; also in my own work. 
Accounts and an analysis of red snow found on mount St. 
Bernard (the colouring of which might possibly have been 
effected by lichen or dust containing iron being carried there 
by the wind) may be found in Gilbert’s Annals, vol. Ixiv. p. 319, 
as extracted from the Bibliotheque Universelle, besides some 
other notices on red dust. (It is very desirable that black me- 
teoric dust should be accurately analysed.) 
1819, 13th August. At Amherst in Massachusetts, the fall 
of a mephitic slimy substance attended by a fiery meteor. Silli- 
man’s Journal of Science, vol. ii. p. 335. (A more exact ana- 
lysis of this substance would, however, be very desirable). 
1819, 5th September. At Studein in the lordship of Keltsch, 
in Moravia, a fall of dry earth from a bright cloud in a clear 
sky.— Hesperus, 1819. Nov. Beilage. No. 42. 
C2 1819, 
