718 



SCIENCE 



[N. S. Vol. XXVIII. No. 725 



has been done, the collecting ground has been 

 encroached upon by the sea and carried away 

 for ballast until the fossil-bearing beds have 

 now been nearly destroyed, and similar col- 

 lections thus made impossible. There are be- 

 sides full collections from all the known 

 Pleistocene localities from Puget Sound to 

 Seammon's Lagoon in Lower California. The 

 collections from Santa Barbara and San 

 Diego are large and especially fine. There is 

 also much valuable material obtained by ex- 

 change from Dr. M. Cossman and Jean 

 Miguel, of France, and from Dr. Koto, of 

 Japan. Representative Tertiary and Pleisto- 

 cene materials of the eastern United States 

 have been received from Professor Gilbert D. 

 Harris, of Cornell University, from T. H. 

 Aldrich, of Birmingham, Alabama, from the 

 Chicago Academy of Sciences, and from many 

 other persons and institutions. It is esti- 

 mated that the collection contains 30,000 

 species and considerably more than 30,000 

 duplicates. 



The new exhibition cases in the geological 

 department will be used for the display of the 

 collection. It will occupy part of the large 

 museum room on the ground floor adjoining 

 the geological lecture room. It will be kept 

 together, and will be known as the " Delos 

 Arnold Collection." 



Hon. Delos Arnold, of Pasadena, who made 

 the collections of fossils, shells, minerals, etc., 

 known as the " Delos Arnold Collection " 

 lately presented by him to the department of 

 geology in Stanford University, was born 

 July 21, 1830, in Chenango County, N. Y. 

 He was educated in the common schools of 

 that state, and at Predonia Academy in Chau- 

 tauqua County, N. T. He studied law at the 

 Albany Law School, from which he graduated 

 in 1853. In that same year he moved to 

 Marshalltown, Iowa, and lived there until 

 1886. For several years he was district at- 

 torney and treasurer of Marshall County. He 

 was appointed United States Assessor of In- 

 ternal Revenue for the Sixth Iowa District by 

 President Lincoln, and served four years. 

 For twelve years he was a member of the Iowa 

 legislature, having been four years member of 



the general assembly, and eight years member 

 of the senate. He was also special state 

 auditor to examine the accounts in connection 

 with the state capitol of Iowa. In 1886 Mr. 

 Arnold moved to Pasadena, California, and 

 has lived there ever since. For ten years he 

 was a member of the school board of the city 

 of Pasadena. 



TBE DEPARTMENT OF MICROSCOPY OF 



THE BROOKLYN INSTITUTE OF 



ARTS AND SCIENCES 



The regular meetings of the department of 

 which Mr. John J. Schoonhoven, M.A., is presi- 

 dent, and Miss Agnes Vinton Luther, secre- 

 tary, will be held during the season on the 

 second and fourth Tuesday evenings of each 

 month. The proceedings at the meetings are 

 as follows : 



October 13 — Conference on " The City's Water 

 Supply," to be conducted by Mr. Daniel D. Jack- 

 son, S.B., director of the Mount Prospect Labora- 

 tory of the Division of Water Supply. The sub- 

 ject of the conference will be illustrated by lan- 

 tern photographs. 



October 27 — Lecture by William H. Park, M.D., 

 of the Research Laboratory of the Department of 

 Health, New York City, on " The Kecent Research 

 Work of the Department of Health." 



November 10 — Conference on " Textile Fibers," 

 to be conducted by Miss Agnes Vinton Luther, 

 secretary of the department. 



November 24 — Lecture by Professor William 

 Campbell, Ph.D., of Columbia University, on " The 

 Microscopical Structure of Metals and Alloys, 

 Native and Artificial." 



December 8 — Conference on " The Use of the 

 Microscope in the Detection of Poisons in Chem- 

 ical Analysis," to be conducted by Mr. Herbert 

 B. Baldwin, chemist for the Board of Health, 

 Newark. 



December 22 — Lecture by Professor Herbert W. 

 Conn., Ph.D., of Wesleyan University, on " Rabies." 



January 12 — Conference on "Photography Ap- 

 plied to Microscopy," to be conducted by Messrs. 

 George E. Ashby and J. P. Wintringham, mem- 

 bers of the executive committee of the department. 



January 26 — Lecture on " The History and 

 Recent Improvements in the Projection Micro- 

 scope," with demonstrations, by Professor Simon 

 Gage, Ph.D., of Cornell University. 



February 9 — Conference on " The Use of the 



