J. D. Dana on a Mohawk-valley Glacier. 243 
partly owing to hostilities between the Somauli and the Massai; but no 
serious obstruction need be apprehended by a well equipped party, large 
enough to command respect. 
“The second and most difficult would be a land exploration through 
travellers from Aden, where a suitable expeditionary party might, per- 
d be to lan 
haps, be collected. Th st promising cours d at 
Mo adoxo, and to reside there some months, learning anguage an 
acquiring a hold on the good will of the people, before attempting further 
rogress. 
“Additional interest is given to this exploration by the fact that Lieut.- 
Colonel Rigby, H. B, M.’s Consul at Zanzibar, is firmly persuaded that 
some Englishmen are now in captivity among the Somaulis; for a report 
to that effect has been confirmed by different witnesses. He believes 
them to be a part of the crew or passengers of an East Indiaman, sup- 
“The last course would be to adopt Mombas as the head-quarters, and 
thenco to pass into the interior by a route to the north of that travelled 
by Baron von der Decken. The country behind Mombas is a less un- 
healthy residence than other parts of the coast; and an expeditionary 
might be organized there at leisure, with help from Zanzibar. e 
v. Mr. Krapf resides in its neighborhood; the natives are ed 
to Europeans ; and the traders mostly speak Hindustani. It would be 
'mpossible, at the present time, to plan an exploration in Africa that 
Would afford hope of a more interesting discovery than one leading from 
ombas round the northern flank of Kenia, and thence onward toward 
ae 
Gondokor 
— 
Ant. XX VI.—On the existence of a Mohawk-valley Glacier in the 
Glacial Epoch; by JamEs D. Dana. 
° 
_ Tae Mohawk river extends in a nearly east-and-west course 
{averaging about east-by-south,) across the centre of the State of 
New ork, and connects with the Hudson river near Troy, eight 
Miles above Albany. It commences its flow eastward at me, 
est of Oneida lake, the waters above this coming from the 
river country, on the north. The whole distance from 
