Geographical Notices. 41} 
with dilute caustic potash, to dissolve any silica of the decom- 
posed portion that was not dissolved Py the acid, gave 
Soluble portion, - - 62°49 
Insoluble e portion, - : é - BT SE 
The metallic pore spate from the ty part gave 
‘= : : 86°78 
Nickel, - . - - - - - 43°241 
Cobalt, : 3 : é > . 0-342 
Copper, - - - 4 - : - 0036 
Phosphorus, - - . - % ‘ 0°026 
ulphur, - - - - +. SO7e 
Silica - - - - 47-06 
Oxyd iron, 4 : - “ - . - 26-05 
Magnesia, - - - - - - - 27°61 
Alumina, - - - - - - - - 2°35 
Lime, - > - - - - - - 0s1 
Soda, - - -. . ie < "3 z 00-42 
Potash, : - - - - - 00°68 
Peroxyd manganese, - - - - trace, not estimated. 
It is clear from the analyses as made out, that these meteoric 
stones contain the constituents frequently found in similar bodies; 
namely: niekeliferous iron, phosphuret of iron and nickel, sul- 
phuret of iron, 0 sa a8 pyroxene and albite; and in about the 
following proportio 
Nickeliferous i iron, - - - - - - 4989 
i i - - - a = < ~~ - 009" 
Magnetic pyrites, - - - < - - 001 
Olivine, - - - - = - - ~ $1000 
Pyroxene and albite, - . - - - - 34-000° 
I have no intention to enter into any speculations in relation 
to these meteoric stones, although I have accumulated some addi- 
tional matter on the subject since my memoir on meteorites pub- 
lished in the Am. Jour. Science, yol xix, pp: 152 and 522, in- 
tending to reserve nee publication for a future occasion. 
Louisville, Ky., Oct. 1, 185 
Art. XLIV.— Geographical Notices. No. IX. 
Tur INLAND Seas or Arrica. Sources oF THE NILE.— 
The Royal hiecal Society of London ‘have awarded the 
Founder's Medal otal te the current year to Capt. R. F. Burton, of 
é Bombay ay army, for the discovery of the great lake of Tangan- 
ika, in Africa, the more northern lake being discovered by 
ne 26, 1857, the Fes Paveléis left Zanzibar for the interior 
