72 THE AMERICAN MONTHLY. [March. 



upon organs of digestion (tongue, teeth, salivary glands, oesophagus). 

 For this each member attending brings microscope, A" or £" objectives, 

 and a few slips and cover-glasses. (Fee for the session ending Jiine. 

 1889, 2s. 6d.) 



January 26, i88g. — Annual soiree and lecture. Subject : Electrical 

 phenomena in animals. By Prof. W. Stirling, M. D., of Owens Col- 

 lege. (Admission, is.) 



January J 1 ", i88g. — Annual election of officers. President, Prof. A. 

 Milnes Marshall, M. D. ; Vice-Presidents, Alex. Hay, E. W. Napper, 

 and Thos. E. Hoyle ; Hon. Treasurer, James Fleming; Hon. Secre- 

 tary, Geo. Wilks ; Hon. Librarian, E. C. Stump; a standing com- 

 mittee of ten members. 



Thursday, February 7, i88g. — Program : Devitrification, by Percy 

 F. Kendall, with lantern illuminations and polarized light, under direc- 

 tion of Wm. Leach. Distribution of specimens of dog-fish skin from 

 Robert Thornton Brain, of Great Yarmouth. Conversazione. 



Thursday, February 21, i88g. — Mounting section. This section 

 has its own Chairman, Vice-Chairman, Hon. Secretary and Treasurer, 

 and committee of seven members. Demonstrations : Dry mounting by 

 Mr. A. Flatters ; properties and arrangement of lenses by Mr. T. E. 

 Hoyle. Practical demonstration course : Organs of digestion, con- 

 tinued (stomach, small intestines, large intestines). 



Exchanges. 



[Exchanges are inserted in this column without charge. They will be strictly limited to mounted 

 objects, and material for mounting.] 



OFFERED. — Diatomaceous earth from Thibet, various localities (12,000 feet); also, material and 

 slides of diatoms from Scottish Highlands, and continental foraminiferae. WANTED. — Slides of 

 American diatoms, insects, or botany. 



W. D. STEWART, 2 Gilmore Terrace, Edinburgh, Scotland. 

 OFFERED. — Sections of vegetable ivory and slides of crystalized maple sugir. Good mounts 

 taken in exchange. WM. LIGHTON, 106 Filth Avenue, Leavenworth, Kansas. 



WANTED. — Parasites and books on Parasites and other micro, subjects. Will give Anatomical, 

 Pathological, Botanical, Micro-fungi, Zoophytes, Polycistinse. Foraminifera, Parasites, and other slides 

 in return. FRED. LEE CARTER, Gosforth, near Newcastle-on-Tyne, England. 



Wanted, Diatomaceous earth from Megillanes, Bolivia, South America. Can give in exchange 

 either Diatomaceous earth from New Zealand or cash. 



E. MICHALEK, I. Fleischemarkt, No. 1, Vienna, Austria. 

 Mounted sections of Fcetal Lung (5 months), sections across entire lobe, ^Vis in. thick, beautifully 

 stained, in exchange for first-class pathological slides. 



W. C. BORDEN, M. D., U. S. A., Fort Douglas, Utah. 

 Wanted, earths, recent diatoms, and miscellaneous objects for mounting. Only first-class material 

 offered or desired. MARY A. BOOTH, Longmeadow, Mass. 



Fossil Diatomaceous deposits (marine) wanted from Bermuda, Virginia, Marvland, California, etc. 



I. ELLIOTT, Ardwyn Villa, Aberystwith^ Wales, England. 

 Labels for slides. EUGENE PINCKNEY, Dixon, 111. 



Correspondence relative to exchange in microscopical material or prepared mounts. 



HENRY L. OSBORN, Hamline, Minn. 

 First-class Histological Slides for other good mounts ; Histological and Pathological material cut on 

 shares. S. G. SHANKS, M. D., 547 Clinton Ave., Albany, N. Y. 



FOR EXCHANGE. — StrichniaChromate (Strichnia ^ gr.) and Strichnia Ferri-Cyanide (Strichnia 

 i-Trrrgr.) Will exchange for other slides, Botanical preferred. Only first-class slides offered or desired. 



L. A. HARDING, Fergus Falls, Minn. 

 FOR EXCHANGE.— Mounted slides of Gold Sand, Gold Washings, Wire Silver, Pyrites of Iron, 

 Petrified Wood, etc., for Pathological slides and cut material or other desirable mounted specimens. 



W. N. SHERMAN, M. D., Kingman, Ariz. 

 FOR EXCHANGE. — Diatomaceous earth from Richmond, Va., Nottingham, & Calvert Co., Md., 

 Los Angeles and Santa Monica, Cal., for other diatomaceous material, crude or cleaned, recent or fossil 

 (marine forms preferred), or for diatom or miscellaneous slides (only good mounts wanted). 



F. W. DUNNING, 37 Garrison Ave., Battle Creek, Mich. 

 WANTED. — A set of Proceedings of the American Society of Microscopists. State price of set or 

 of single volumes, kind of binding, etc. Also, any other microscopical periodicals. 



P. O. BOX 630, Washington, D. C. 



