168 PROCEEDINGS OF THE ACADEMY OF 



teriorly finely papillate, or with a discoid papillate subdivision 

 Exterior of the body colorless and transparent; interior of tlie 

 bod}', or entosarc, 3'ellowish, and spotted brown or green from the 

 food contents. When moving the animal resembles a sea-slug, 

 Eolis, in its shape and from its many long pointed pseudopods. 

 At the fore part of the body, in progression, a large extent of per- 

 fectly clear ectosarc precedes the entosarc, equal to about one- 

 sixth the length of the body. This is blunt in front, and with its 

 divergent pseudopods resembles the head of a slug. When float- 

 ing the animal looks like a large Aclinoplu-yti with thick conical 

 rays. The animal is voracious, and feeds on desmids, diatomes, 

 and diffnse granular and flocculent vegetable matter. Leng-th of 

 the body from \Xh. to ^th mm; breadth j^'^t'' ^o ^tli mm. The 

 pseudopods up to y^^jth mm. long by xgsth mm. thick. Absecom 

 Pond, New Jerse3\ Frequent from September to November. 



On Supposed Spermaries in Amoeba Prof Leidy stated that 

 in an examination of a large Amoeba^ from Absecom Pond, N. J., 

 he had observed a point of structure which he had not previously 

 noticed in any of the species. The Amoeba generally assumed a 

 globular or oval form from the j\ to the |^ of a line in diameter. 

 It projected from an}' part of its circumference digitiform pseu- 

 dopods np to j';j of a line by the j^jj of a line thick. The gran- 

 ular matter of the entosarc was mingled with a multitude of brown 

 food balls, and numerous crystals, most of which appeared to be 

 of isometric forms. The coarser granules of the entosarc rarely 

 entered even the base of the pseudopods. 



The uniformly granular nucleus, immersed in the entosarc, 

 measured about -^\ of a line in diameter. The contractile vesicle 

 measured 2V of a line, AVith a j^^ immersion objective lens, there 

 were observed around tiie circumference of the contractile vesicle, 

 half-a-dozen granulated spheres, from ^^^ to g^, of a line in 

 diameter. The grannies of these spheres appeared to be of uni- 

 form size, and exhibited an active swarming movement, resembling 

 the motion of sperniatozoids. I could not isolate the spheres to 

 examine them more definitely, nor could I detect the ordinary 

 spermatozoid form among the closel}' swarming granules. I have 

 suspected that these granular spheres were spermaries ? After 

 having detected them with the j\ objective lens, I could barelj' 

 see them with the i objective. 



On the Geology of Certain Lands in Ritchie and Tyler Coun- 

 ties^ W. Va. Prof, Persifor Frazer, Jr,, asked the attention of 

 the meeting while he described, as follows, the geological features 

 of two tracts of land in Ritchie and Tyler Counties, W. Va., be- 

 longing to the Acadeni}', and which lie had recently been requested 

 to examine as an expert. The tract in Ritchie County exclusively 

 comprises a tolerably regular parallelogram, whose sides run north- 



