320 TRANSACTIONS OF THE [mAY 10, 



fered his first contribution to the Philadelphia Academy of 

 Sciences, at the age of nineteen, he has been a devoted and bril- 

 liant investigator in five great branches of Natural History, 

 ichthyology, herpetology of the batrachians and reptiles, mam- 

 malian palaeontology, historical geology and philosophy. In 

 each he has long been an acknowledged leader, and his combined 

 knowledge of all has given his researches a philosophical 

 breadth, grasp and permanence, which place him among the 

 great masters of Comparative Anatomy, Cuvier, Owen and 

 Huxley. We deeply regret that his untimely death has cut 

 short his life work, and feel that the loss of his keen, critical 

 and productive facult^"^ deals a blow to the cause of comparative 

 anatomy of the vertebrata throughout the world, which can 

 hardly be measured. We tender to the American Philosophical 

 Society and to the Academy of Natural Sciences of Philadel- 

 phia, of which Professor Cope was a life long member, an ex- 

 pression of our deep regret at their loss, and of our readiness 

 to cooperate with them in the establishment of some suitable 

 memorial. 



(Signed) Henry F. Osborn, 



J, L, Wortman. 



Mr. H. E. Crampton, Jr., gave a brief extract of a paper by 

 F. C. Baker on "Notes on Variations in the Apex of Gasteropod 

 Molluscs." The paper will be found in full in the Annals, Vol. X. 



Professor Bashford Dean and Mr. F. P. Sumner reported on 

 "The spawning habitsof the brook Lam pre}- T'e^romyzonTi^t'Zderi" 

 at Van Cortlandt Pond. The paper appears in full below. 



Mr. H. E. Crampton, Jr., reported on some "Coalescence-Ex- 

 periments with Lepidoptera." 



A paper on the "Vertical Distribution of Plankton in Deep- 

 Sea Collections from Puget Sound " by Professor James I. Peck 

 and Mr. N. R. Harrington was read by title. 



Gary N. Calkins, 



Secretary. 



