Abstract
In I919, Mr. B. 0. Wolden sent me a specimen of moss taken from a boring near Mud Lake, Emmet Co., Iowa, at a depth of about fifteen feet below the surface. It was as well preserved as many herbarium specimens and can not be distinguished from the present day form of D. fluitans Jeanbernati by any characters I was able to observe. The moss was found at the bottom of ail apparent pocket in the Kansan drift or else at the edge of the deposit, as it was below the usual upper level of this drift but not covered by it, but by a compact mass of vegetable matter. Mr. Wolden suggests that the ice may have pushed this vegetable matter into a heap along its edge. To me it seems more probable that it occupies a pocket in the earlier geological deposits. Specimens sent to Dr. Evans at Yale were identified by Dr. Nichols as D. fluitans. One cannot help wishing that this interesting deposit could be excavated by hand with scientific care. The mosses are evidently of recent geologic time but yet in all probability some thousands of years old. i VINE ST., NEW BRIGHTON, STATEN ISLAND, N. Y.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
