EVIDENCES(?) OF WATER-DEPOSITION OF LOEbS. 38 1 



systematic significance . . . . ' If this is true, we are at liberty 

 to assume that the loess fossils from the water-tower hill, 

 identified for Professor Winchell by Professor Shimek as Poly, 

 gyra multilineata, Pyramidula alternata, and Succinea obliqua, 

 may with equal certainty be referred to the genera Planorbis 

 and Limnea of the family Limnaeidae, and Paludina integra 

 of the family Paludinidae. The aeolian theory would accord- 

 ingly suffer the loss of its best support." 



Of course those who have studied the subject, know that 

 Dr. Gill had reference to classification of molluscs, and not to 

 specific identifications. Pyramidula alternata, for example, 

 will always be readily recognized as a distinct species even by 

 the beginner, whether it be placed in the genus Pyramidula 

 of the family Endodontida y , or, as formerly, in the genus Helix 

 of the family Helicidcc. Miss Owen is not familiar with mol- 

 luscs, and it is to be regretted for her sake that her statement 

 was published, as it is sure to invite the ridicule of all who 

 have even the most rudimentary knowledge of shells. The 

 efforts made by these latest critics to discredit the "best sup- 

 port" of the seolian theory are certainly not a success. 



