1881.] Microscopy. 929 
Celsius, but the climate is rather dry and there are no glaciers. 
Dr. Woeikoff shows by examples that the difference of mean 
temperatures at the lower ends, of glaciers reaches as much as 
fully 20°. Provided the quantity of rain and snow is great, gla- 
ciers descend as low as 212 meters above the sea-level, as in New 
Zealand, which has the latitude of Nice and the mean tempera- 
ture of Vienna and Brussels. He also discusses the decided in- 
Dr. Kirk, the English Consul-general at Zanzibar is 
Preparing a work on the tsetse fly. he Portuguese propose 
to establish four great stations in Central Africa from which the 
exploration of the surrounding districts can be carried on.— 
he missionaries at the University’s Mission Station at. Masasi, 
state that the River Lujenda is believed to rise from a great lake 
fast of Nyassa, and it is probable that a good sized lake still 
remains to be discovered to the north or north-east of Shirwa. 
~——The Italian travelers Dr. P. Matteucci and Lieut. Alfonso. 
Massari reached Liverpool on August 5th, from a journey across 
Africa. They left Suakin, on the Red Sea, on March 5, 1880, 
and proceeded by way of Khartum and the province of Kordofan 
to El Fasher, the capital of Darfur. After wearisome negotia- 
tions they were allowed to go to Abeshr, the chief town of 
Wadai. They then visited Lake Chad, and after traversing 
Bornu, Baghirmi, Sokoto, &c., they arrived at Egga on June 
s 
4 scale of 1 : 250,000. 
arrived at Sydney from New Britain early in May last. During 
his visit of eight months in that island he made large collections, 
cluding 12,000 geological specimens. 
land, and goes afterwards to North Australia and thence to New 
Guinea, making ‘careful observations of the character and habits 
of the natives of these regions. 
_ MICROSCOPY.! 
: Examination oF CARBON DIOXIDE IN THE FLUID CAVITIES OF 
Minerars.—Mr. Alexis A. Julien thus describes the method em- 
_ Ployed in his investigations : Bee sgt f 
a the qualitative identification of carbon dioxide in the cavi- 
_-* This departm 
i irtment is edited by Dr. R. H. Warp, Troy, N.Y. — 
vou, XV.—NO, XI, te. = 
