Proceedings. ^X 



C. D. Walcott : On Some Appendages of the Trilobites,* and 

 On the Occurrence of Fossil Medusa? in the Middle Cambrian 

 Terrane. 



April 7, 1894—226 Meeting. 



Vice-President Frank Baker in the chair and twenty-five per- 

 sons present. 



Discussion : What is a Living Cell ? 



April 21, 1894— 227th Meeting. 



The President in the chair and twenty persons present. 

 The following communications were presented : 

 B. T. Galloway : The Effect of Spraying with Fungicides on 

 the Growth of Nursery Stock. f 



A. F. Woods : The Calorific Effect of Light upon Plants. 

 Erwin F. Smith : The Length of Vessels in Higher Plants.;}] 

 Ch. Wardell Stiles : Adult Cestodes of Herbivorous Animals. 



May 5, 1894— 228th Meeting. 



The President in the chair and seventeen persons present. 

 The following connnunications were presented : 

 Lester F. Ward : A Recent Collection of Fossil Cycads from the 

 Potomac Formation of Maryland. § 



B. T. Galloway : The Size and Weight of Seed in Relation to 

 the Size and Weight of the Plant. || 



May 19, 1894— 229th Meeting. 



The President in the chair and twenty-three persons present. 

 The following communications were presented : 



C. Hart Merriam : The Dental Armature of Pocket Gophers 



{Geomys).^] 



* Note on some i\.ppendages of the Trilobites. -^Proc. Biol. Soc. Wash. , 

 vol. ix, 89-97, pi. 1, March 30, 1894. 



tBull No. 7, Div. Veg. Path., U. S. Dept. Agric, Aug., 1894. 



t Science, NS., I., 77, 1895. 



§Bull. Torrey Bot. Club, xxi. No. 7, 291-299, July 20, 1894. 



II Agricultural Science, voL 8, 557, 1894. 



1[ Monographic Revision of tlie Pocket Goi^hers, family Geomyidte, 

 chap. iii. The Dental Armature. <N. Am. Fauna, No. 8, 69-97, figs. 

 Jan. 31, 1895. 

 2 



