Apeil 8, 1898.] 



SCIENCE. 



489 



A fiftieth anniversary card will be sent 

 to each member entitled to it. A list of all 

 paying in advance will be printed for the 

 opening day of the Boston meeting. This 

 list will indicate whether a member is to be 

 present or absent. Such a list will greatly 

 facilitate the arrangements for the meeting, 

 -and all members are requested to give this 

 new feature their earliest attention. Asso- 

 ciate members (wives and daughters, and 

 sons under twenty- one years of age) will 

 iilso be provided with the anniversary 

 cards, and will have their names entered 

 on the list upon receipt of the associate fee 

 of three dollars. 



It is hoped that one of the results of this 

 anniversary meeting will be an increase of 

 tlie research fund of the Association. To 

 this end members are reminded that they 

 can commute their assessments for life by 

 the remittance of fifty dollars. All money 

 thus received is invested and the income is 

 used for the encouragement of research. 

 This fund now amounts to about $6,000, 

 which has accumulated during the past 

 twenty years. 



The Sectional Committees of each Sec- 

 tion will prepare programs for the Sections 

 in advance of the meeting, and notice of 

 papers offered should be sent to the respec- 

 tive Secretaries at an early date. 



It is hoped that all the surviving found- 

 ers of the Association will be present at the 

 Boston meeting, and I shall be much in- 

 debted to anyone who will send me the full 

 name and address of any survivor of the 

 meeting of ]8J:S. 



It is now twenty- five years that I have 

 had the pleasure of serving the Association 

 as its Permanent Secretary. During all this 

 time I have held the firm belief that the 

 mental stimulus and broadening influence, 

 afi'orded by such annual gatherings of per- 

 sons interested in the various departments 

 of science are of vital importance to every 

 professional scientist. Such reunions not 



only promote good fellowship among scien- 

 tists and lovers of science, but also serve to 

 prevent the specialist from becoming so ex- 

 clusively absorbed in his own particular 

 life work as to forget that it is his duty to 

 unite with his fellow workers in securing 

 results which make a scientific career worthy 

 of special respect — the advancement and 

 diffusion of knowledge and the ameliora- 

 tion of mankind. 



CUBBENT NOTES ON PSrSTOGBAPHF. 

 WATERFALL LAKES IN OENTEAL NEW YORK. 



In continuation of the brief suggestion 

 by Gilbert a year ago, Professor E. C. 

 Quereau, of Syracuse, describes the ' Topog- 

 raph}^ and History of Jamesville Lake ' 

 (BuU.Geol.Soc.Amer., IX., 1898, 173-182), 

 which furnishes another illustration of ex- 

 ceptional forms in a dissected plateau, thus 

 appropriately following the example of iso- 

 lated hill groups in the dissected uplands 

 of Missouri, as described by Marbut (Sci- 

 ence, VII., 273). Jamesville lake, a few 

 miles southeast of Syracuse, occupies a cav- 

 ity in a north-sloping arm of the Allegheny 

 plateau, which is here normally divided 

 into digitate spurs by many obsequent 

 streams and their insequent branches. The 

 lake and the gorge by which it is drained 

 eastward into Butternut creek (obsequent) 

 are the work of a temporary glacial river, 

 which ran eastward between the northward 

 land slope and the southward slope of the 

 retreating ice sheet. A large current of 

 water thus guided crossed several of the 

 plateau spurs, carving channels of greater 

 or less depth, and in a number of cases form- 

 ing waterfalls on the sill of the Corniferous 

 limestone; the falls retreating and pools be- 

 ing formed beneath their plunge in a fashion 

 normal enough to the glacial river, but en- 

 tirely abnormal to the ordinary drainage of 

 the plateau. Jamesville lake is one of these 



