1908.] NATURAL SCIENCES OF PHILADELPHIA. 457 



reports on glacier movements in the Canadian Rockies. He served 

 as Curator since January, 1905, and gave special attention, valuable 

 because of his ability as an architect, to the plans for the alteration and 

 extension of the premises made possible by the recent appropriation 

 of $150,000 by the Legislature of Pennsylvania. His singularly 

 engaging personality and amiable disposition endeared him to his 

 associates, and the Academy deeply sympathizes with the loss his 

 family has sustained in his untimely death. 



The deaths of the follo^^^ng Correspondents were also announced: 

 Spiridione Brusina, May 21, 1908, and Gustav Mayer, July 14, 1908. 



October 20. 



Arthur Erwin Brown, Sc.D., Vice-President, in the Chair. 



Eighteen persons present. 



The Publication Committee reported the reception of a paper entitled 

 "A Review of the Genus Piaya Lesson," by Witmer Stone (October 14). 



Recent Additions to Our Knowledge of the Flora of Southern New 

 Jersey. — Mr. Witmer Stone based his remarks on the work of the 

 Philadelphia Botanical Club, especially during the past few years. 



Taking Dr. Britton's Catalogue of the Flora of New Jersey, published 

 in 1889, he stated that twenty-six phanerogams and ptcridophytes 

 had been added by the Club since that date, exclusive of the numerous 

 subdivisions that have been made of older species or closely allied 

 species not recognized as distinct b}^ Dr. Britton. Of the latter he 

 had listed fifty-five not in Dr. Britton's Catalogue and doubtless there 

 are others. Introduced or naturalized plants were not considered in 

 either enumeration. The twenty-six species were as follows, the 

 nomenclature following Britton's Manual : 



Ophioglossum arenarium. — Originally discovered by Mrs. E. G. 

 Britton, July 3, 1897, at Holly Beach, and later exterminated by a 

 Ijuilding operation. This species was rediscovered during the present 

 year by Mr. Joseph Crawford at Longport, and by Mr. Bayard Long 

 at Spray Beach. 



Dryopteris simulata. — Discovered several years ago at Clementon 

 by Mr. Stewardson Brown; later found at Sicklerville, Cedar Brook, 

 Double Trouble, and Forked River. 



Isoetes dodgei. — Collected at Fish House, on the Delaware, by Mr. 

 W. A. Poyser. 



Alisma tenellum. — Discovered in August, 1907, on the border of a 

 pond a short distance above Delanco by i\Iessrs. Brown, Van Pelt 

 and Stone. In the same pond grew Scirpus torreyi, new to the State, 



