3o8 Journal of Travel and Natural History 



Gerard, the first English traveller who mentions it). It is a sheet 

 of water ten miles in length by two in breadth, situated at an 

 elevation of upwards of 17,000 feet above the sea. Several good 

 sized streams flow into it, but there is no outlet. Some suppose 

 that under such circumstances the water should become salt, others 

 that the lake should gradually increase in size and depth ; and as 

 it is neither salt, nor increasing in size, the Dens ex machina of a 

 subterranean outlet has been proposed by some to account for its 

 condition. Mr Adams, however, tells us that this idea has no 

 support from any appearances observable on the lake or neigh- 

 bouring country, so that the waste and supply must be balanced 

 by evaporation. Indeed, it appears that there are considerable 

 fluctuations in its level, as there were high water marks, indicating 

 an occasional greater height of water than when he saw it. 



We had marked other passages for remark and quotation, such 

 as his experience of the sensations from the rarefaction of the air 

 at these great elevations, &c., but space fails us. We have said 

 enough to shew that the book will be a valuable addition to the 

 library, not only of the naturalist, but of the general reader. 



