ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 745 



Let stand for several days, filter back into capped bottle, when a clear 

 solution, ready for use, will be obtained. 



On the other hand, Mr. J. Deby finds that styrax never dries 

 completely, and he considers that, except for tests, the old balsam 

 mount is the safest and longest-lived of all. 



Bureau of Scientific Information.* — With a view to the more 

 general dissemination of the results of scientific investigation, 

 and facilitating the work of the student in natural history, certain 

 members and officers of the Academy of Natural Sciences of Phila- 

 delphia have associated themselves into a " Bureau of Scientific 

 Information," whose function is the imparting, through correspondence, 

 of precise and definite information bearing upon the different branches 

 of the natural sciences. It is believed that through an organization 

 of the kind considerable assistance can be rendered to those who, by 

 the nature of their surroundings, are precluded fi'om the advantages 

 to be derived from museums and libraries. The scope of the 

 organization does not embrace considerations of a purely professional 

 character — such as mineral or chemical analyses — nor the determina- 

 tion of collections, except by special agreement. Dr. J. Leidy under- 

 takes the Mycetozoa, Ehizoj)oda, Entozoa, &c. ; E. Potts, pond life, 

 freshwater sponges, and Bryozoa ; Dr. B. Sharp, worms and histology ; 

 and Dr. J. Gibbons Hunt, microscopical technology. 



A New Departure.l — The following advertisement is appearing : 

 " Microscopic objects for hire, histological, botanical, geological, by 

 the best mounters. Let out on most moderate terms." 



Adamkiewicz, a. — Neue Riickenmarkstinctionen. I. Ergebnisse am nor- 

 malen Gewebe. II. Ergebnisse der Saffraninfarbung am kranken Rucken- 

 marksgewebe. (New Btains for spinal cord. I. Results with normal tissue. 

 II. liesults of saffranin staining in diseased tissue.) [^Supra, p. 742.] 



SB. K. Akad. Wiss. Wien, LXXXIX. (1884) p. 245 (3 pis.). 

 Anzeig., 1884, No. 10. See also ante, p. 428. 



Ady, J. E. — The Microscopic Study of Rocks. V., VI. 



[Mounting, finishing, and storing.] 



lUus. ScL Monthly, III. (1885) pp. 163-6, 198-202. 



„ „ Observations on the Preparation of Mineral and Rock Sections for 

 the Microscope. Mineral. Ma</., VI. (1885) pp. 127-33 (2 figs.). 



Abridgment in En<jl. Mech., XLI. (1885) pp. 342-3 (2 figs.). 

 Bacterial Pathology. 



[A .scries of papers on the cxliiLits at the biological laboratory of the 

 Hoaltii Kxljibition, with figures sliowing the appearance of the bacteria 

 and the apparatus used in preparing and cultivating tiicin.] 



40 pp., 30 figs. 8vo, New York, 1885 (reprinted from Lancet). 



Dastiv, E. S. — Directions for Preparing and Mounting Sections of Stems and 

 Leaves. Wedcm Dru/ji/ist. Noted in Bot. Gazette, X. (1885) p. 2G4. 



Booth, M. A. — Why do dry mounts fail ? [/'os<.] 



Micr. Bulletin (Queen's) II. (1885) pp. 17-8. 

 Bot TONE, S. — Sec Vol vox. 



• Science, iv. (1884) p. 108. f Nature, xxxii. (1885) p. xxix. 



