Xo. 484] 



NOTES AND LITERATURE 



279 



;.re einl)0(li(>(l ii. tliis .splcn.li.lly illiisi nin-.l ivport l.y ^Fr. N. II. Darton. 



end, while iiiinnr tlrxuiv. wnd f.-iiill. ...■. nr. 'I'lic .avn.Tnl uvolo.i^-i.- 

 history of the rctrion i. tnicc.l. an.l in .-cik lu.i.,ii xhv miiicnil ivxMirc.-s. 

 wate/supply and tinihev are doscrihcd. Sonif y.-ais a-n Mr. F. E. 

 Matthes prepared an unusually valuahlc coniour map nf ilic central 

 portion of the range and discussed the fcatiiiv due lo ohn sculpture 

 Mr. Darton's report gives a comprehensive aeeount of the general 

 geology, adding much to our knowledge of this inierestin<r region. 



and presents in this paper' an aeconnt of a lake which .seems to owe 

 its origin to glacial erosion, and uhi. l, elosely re-Mni^les th.- famous 

 valley lakes of Switzerland. A-ronling ,o p.vxiou. ol-MTsers ihe 

 lake has been fonued bv the danuiiiiiu- of an old outlet l>v fans spread 

 out acro.ss the valley "by tributary stream- but Mr. llm.tington 

 presents pretty clear evidence that the basin is terminated by a rock 

 lip rising well above the present level of the lake, and of course nuieh 

 farther above the lake bottom, th(^ lak(^ being 1 12 fe(^t deej) aeeordiiig 



ings and photographs. 



