328 
THE KILIMA-NJABO EXPEDITION. 
crowned volcano lias probably entered a peaceful old 
age. 
NOTE BY PROFESSOR T. G. BONNEY, Dr.Sc., LL.D., F.R.S., 
President of the Geographical Society, 
On a Small Collection of Bocks brought from the Higher Begions of 
Kilima-njaro by Mr. H. H. Johnston. 
No. 1.—Subangular fragment of smooth, compact, nearly Mack 
rock; appears as if somewhat waterworn; fracture rather conchoidal. 
A glass-basalt, or possibly one of the more basic augite-anderite. 
14,000 feet. Central ridge of Kilima-njaro. 
No. 2.—Subangular fragment, somewhat rounded in outline; ap¬ 
pearance like No. 1; colour rather light; and a few small scattered 
crystals of whitish felspar visible; more probably an augite-anderite. 
14,000 feet. Central ridge of Kilima-njaro. 
Nos. 3—5.—Flattened fragments, with a rather platy, more or less 
scoriaceous structure; fragments of a lava flow; probably augite- 
anderite. 14,000 feet. Central ridge of Kilima-njaro. 
No. 6.—A dull, dark-grey rock, with numerous small scattered 
crystals of either hornblende or augite. I believe the former. Pro¬ 
bably a hornblende-anderite ; at any rate, it is almost certainly an 
anderite of some kind, and one of those which are near the basalts. 
The specimen is a large slab. 14,700 feet. Base of Kimawenzi. 
Nos. 7—14.—Fragments of rock and mineral. The rocks, which 
are rather decomposed, appear to be of volcanic origin, and most con¬ 
tain rather large crystals of the mineral sent with them. This is a 
rather peculiar form of felspar , the sort probably anderite. 14,000 
feet. Base of Kibo. 
Nos. 15, 16.—Decomposed, scoriaceous in part, with generally 
compact shapes. Dark in colour. Contain rather large crystals of 
the above-named felspar, which is probably a variety of anderite. 
14,000 feet. Central ridge. 
No. 17.—A crystal, fairly well-preserved, about 1| inch long. 
Apparently it is a felspar, but the form is certainly an exceptional 
one. From its form I should suppose it to belong to the monoclinic 
system, and was bounded by basal clinopinacoidal and prismatic 
planes; but I do not remember to have seen a sanidine (or indeed 
any other felspar) crystal of this form, and suspect it will prove to be 
a plagio-clastic felspar. 14,000 feet. Central ridge. 
No. 18.—Boiled pebble of dark scoria, with crystals sometimes 
