196 



SCIENCE. 



[N. S. Vol. VIII. No. 189. 



' Registering Solar Radiometer and Sunshine 

 Recorder :' By G. S. Isham. ' Tertiary Ele- 

 vated Limestone Reefs of Fiji :' By A. Agas- 

 Siz. ' lodometric Determination of Molyb- 

 denum :' By F. A. GoocH and J. T. Norton, 

 Jr. ' Solvsbergite and Tinguaite from Essex 

 County, Mass. :' By H. S. Washington-. ' Oc- 

 currence of Native Lead with Roeblingite, Na- 

 tive Copper and other Minerals at Franklin 

 Furnace, N. J. :' By W. M. Foote. ' Position 

 of Helium, Argon and Krypton in the Scheme 

 of Elements:' By W. Crookes. 



The American Naturalist for July opens with 

 the first part of an article by Mr. C. R. East- 

 man on the ' Dentition of Devonian Ptyctodon- 

 tidse.' Mr. Outram Bangs contributes a list 

 of the mammals of Labrador supplementary 

 to that prepared by Mr. A. P. Low. There 

 are short articles on variations in the number 

 of ray-flowers in the White Daisy by Mr. F. C. 

 Lucas and on the development of Mantis by 

 Mr. T. D. A. Cockerell. 



SOCIETIES AND ACADEMIES. 

 ENGELMANN BOTANICAL CLUB. 



The Club met July 14th, ten members 

 present. 



Mr. C. H. Thompson discussed the distribu- 

 tion, pollination and dissemination of North 

 American Lemnacese. In opposition to the 

 current view of wind pollination, Mr. Thomp- 

 son adopts Ludwig's theory of insect pollina- 

 tion as most consistent with Lemna structure. 

 Local dissemination is bj^ means of currents of 

 water and wind and by aquatic insects. Fronds 

 are carried to greater distances by adhering to 

 water fowls. 



Dr. Joseph Grindon presented a list of plants 

 observed by him in Forest Park with their time 

 of flowering. 



Mr. J. B. S. Norton mentioned finding Seli- 

 anthus petiolaris, Sesbania maerocarpa, Salsola 

 Kali Tragus and other plants introduced about 

 East St. Louis, and Stenanthium robustum in 

 Forest Park, where it was collected by Dr. 

 Engelmann many years ago, but west of the 

 range usually given for that species. He also 

 spoke briefly of Darwin's recent observations on 

 stomata. 



The meeting of July 28th was devoted to in- 

 formal talks on botanical topics of interest to 

 the members present. 



J. B. S. Norton, 

 Acting Secretary. 



ACADEMY of NATURAL SCIENCES, OF PHILA- 

 DELPHIA, JULY 26, 3898. 



Mr. Wilfred H. Harned, alluding to the 

 report that clay was eaten in certain places in 

 the Southern States, read a letter from a cor- 

 respondent intimating that the practice could 

 not be met with there. 



Mr. Benjamin Smith Lyman remarked that 

 on the Island of Yesso he had been shown a 

 white clay which was said to be eaten by the 

 natives. 



Professor Henry A. Pilsbry exhibited a 

 number of shells of the genus Cerion, illustrating 

 the fact that each of the Bahama Islands has its 

 own peculiar species. He had been told that 

 in Cuba the habitats of the species of this genus 

 are almost as well defined as are those of the 

 islands. No one species is generally distributed 

 over the entire island nor along any great ex-, 

 tent of sea-board. Specimens of Cerium, incanum 

 from the Florida Keys were also exhibited. 

 The speaker suggested that an examination of 

 the Keys would probably reveal a similar 

 definition of local forms. 



A paper entitled 'A New Land Snail from 

 Clarion Island,' by Henry A. Pilsbry, was 

 presented for publication. 



Edw. J. Nolan, 



Secretary. 



NEW BOOKS. 

 V Annie Psychologique. Alfred Binet. Paris, 



Schleicher Freres. 1898. Quatrieme Annee. 



Pp. 849. 

 Electricity and Magnetism. Francis E. Nipher. 



St. Louis, J. L. Boland. 1898. 2d Edition. 



Pp. xi + 430. 

 Special Beport on the Beet-sugar Industry of 



the United States. Washington, Government 



Printing Office. 1898. Pp. 239. 

 The Birds of Indiana. Amos W. Butler. From 



the 22d Report of the Department of Geology 



and Natural Resources of Indiana. 1897. 



Pp. 516-1187. 



