836 



SCIENCE 



[N. S. Vol. XXV. No. 647 



The three diagrams here presented are re- 

 produced from an article by the undersigned 

 on ' The sculpture of mountains by glaciers ' 

 (Scot. Geogr. Mag., XXIL, 1906, Y6-89), in 

 which evidence for glacial erosion is found in 

 a comparison of glaciated and non-glaciated 

 mountains, entirely independent of whether 

 glaciers are known to be capable of eroding or 

 not. In view of the inaccessibility of the 



itToDglr tffwted by gUckn whldi it}U 



bottom of a large Alpine glacier, it is believed 

 that the best means of determining whether it 

 acts as a sculpturing agent or not is to b« 

 found in a comparison of districts, otherwise 

 similar, one of which has not been glaciated, 

 while the other has been glaciated. The dia- 

 grams are not drawn from nature, although 

 they summarize a variety of facts seen in 

 various mountain ranges. The third one of 

 the series may be taken as typical of La 

 Plata peak, in the Sawatch range of Colorado, 

 and of the overdeepened trough of Lake Creek 



beneath it, with a well-defined hanging lateral 

 valley between the two. 



It is of interest to note in this connection 

 that a good explanation of hanging lateral 

 valleys was given earlier than the date, 1898, 

 usually assigned for this important advance 

 in rational physiography; namely, in 1888, by 

 La Noe and Margerie, in ' Les formes du 

 terrain' (Paris, Service geograph. de I'armee, 

 p. lYY), where the cause of the discordance of 

 hanging lateral valleys over their trough-like 

 main valleys is very clearly set forth. 



"W. M. D. 



TEE WI8TAR INSTITUTE OF ANATOMY 



The annual meeting of the advisory board 

 of anatomists of the Wistar Institute was held 

 on April 14 to 16. The members of the board 

 present were Professors Barker, Donaldson, 

 Gage, Huber, Huntington, Mail, McMurrich, 

 Minot and Piersol; of the institute's staff, 

 Drs. Greenman, Hatai, Stotsenburg and 

 Streeter; of the institute's board of managers, 

 Drs. Brown and Lewis. 



The board held two sessions on Monday, 

 April 15. 



The general work of the year and the finan- 

 cial condition of the institute were explained 

 by M. J. Greenman, the director. 



The research in neurology was reviewed by 

 Professor Henry H. Donaldson, chief of the 

 neurological research of the institute. Pro- 

 fessor Donaldson also reported upon the 

 Vienna meeting of the International Brain 

 Commission (May, 1906) and stated that an 



