^84 The Microscope, 



EXCHANGES. 



This depariniPMt is for the benefit of subscribkks who have microscopical apparatun 

 material or books lohich they wish to exchange, and such wants will be inserted free of 

 CHARGE. The number of insertions given will depend upon the number of exchanges 

 received each month. Subscribers will jJlease notify us when articles have been exchanged 

 or sold. Dealers are referred to our advertising department. 



FOR SALE OR EXCHANGE FOR OTHER BOOKS-A complete set-90 volumes-and 

 odd volumes of Pennsylvania Qenlofjical Reports of Second Purvey ^'""™®* ^"** 

 CHAS. LE R. WHEELE R, 433 Adams Ave.. Scranton, Pa. 



WANTED-Tbe following back numbers: The Micro«cope: Vol II No 1 The 

 Microscopical Bulletin: Vol. I. No, 5, August, 1884; Vol. II No 1 Februarv 188^f 



F°'r^oi^/'^?^^'^i,T-^.^?°^,.<'°"^°"°" o* sliells, mostly American species CesDeciallv 

 Cahfomiany Wanted-Microscopical books, papers material aDnaratns ^trP ^«nH 



&.'?n«" ^^ ^•'*/ ^^" ^^^« to exchange. Ha\4 lo colfectVon'of'^SupSefof alove 

 shells to exchange for same, or will sell both cheap for cash. "upjn,<i.iei, oi aoove 



G. R. LUMSDEN. 



"pOR EXCHANGE-Named Coleoptera. mounted, for microscopical slides 



± C. D. ZIMMERMAN, 5n W . Eagle St., Buffalo, N. Y. 



F*^?.,-1^^-^^^^°F OR SALE-Good histological or pathological mount*. Only good 

 J. slides n any branch of microscopical science desired in exchange. For sale-1 B & 

 ancUMasf o ,f t'uh 1'-^ ^'^'f ''T^', 'P' di^Phregm, neutral tint camira luSdl ocu ars 1 

 n iffif'i . V^ '*• ^vth micrometer, double nose-piece, professional objectives 3-4 and 1 5 inch 

 G.ifflth's focus indicator, mahogany case, 1 Griffluh club microscope oculars B and D 

 student objectives 34 and 1-5 inch, in case, all in excellent conditSn A so a B & L 

 mechanical stage, perfectly new. i^iliu". Aiho a b. <k l,. 



WM. N. BEGGS, M. P., 6 N. Beaumont St., St. Louis, Mo. 



WANTED IN EXCHANGE-A few first class mounted slides, rare objects or novel modes 

 of preparation preferred. Trash neither offered nor accepted. 



. M. A. BOO TH, Long Meadow, Mass. 



■pOR EXCHANGE-Slides of selected diatoms. 



•*- D. B. WARD, Poughkeeppie, N. Y. 



Fwa^^5 «5®^"T^ ^f^ """^ Clean copy of Stowell's Manual of Histology-last edition 

 , Wanted-Second-hand copy of Beale's 'How to Work with the Microscooe "Also first' 

 class slides of the orange tree insect, to exchange for diatoms in tubes 

 E. S. CON TANT. Hawk's Park, Volusia Co., Florida. 



WANTED-The Microscope, Vol. 3. No. 1; Vol. 4, No 3; VciPs Nos^l^4^ 8 Q 10 1? 

 12; Vol 6 all; Vol. 7, Nos. 5, 7, 8, 9. For sale or exchange Vol 3 Nos 2 3 4 Anvone 

 having any of the above, can find a purchaser bv addressing ' ' ^^^°^^ 

 CINCINNATI LANCET AND CLINIC, 199 West 7th Street. 



W'^nlnP^'^Vni ^f'^^'^'T' 7i?'- Vk ^°^- 3- 4. 5 and 6; Vol. IV, Nos. 1, 8, 3, 4,7^, 

 o and 9; Vol. VI, iNos. 4 andS. Address >- "i •»."."> ', 



PROF. H. M. W HELPLEY.St. Louis, Mo. 



■pOR EXCHANGE-I offer "The Standard Natural History," six volumes new and 



fddrfss '°P^' '° '^"''^"^' tor type fides Of diatoms ;Tr will sell a"?educed^^ 

 Aggress A. B. AUBERT, Maine State College, Ororo, Maine. 



■pOR SALE—Beck's Popular Binocular Microscope. 5 objectives, 5 eye-pieces mechanical 



^fti^d^^Fn^ nr'-"'''''''T' '"0""ti?f material, slides, etc. cist Ibouriwo For s^e 

 at ^l.W. lor list of apparatus, etc., address . * ui . aio 



T. W. SMITH, 3640 Indiana Ave., Chicago, 111. 



F*^?io^^o^ CHEAP-Microscope stand with four eye-pieces, co.st $60, never been used- 

 also, Bunsen's Spectroscope, co.st $75. For df-scription and price address ' 



H. S. JEWETT, M. D., 21 S. Ludlow St., Dayton, Ohio. 



F^fanttm^f.Oa'''"""'™^''''''''''''''^"'^''^' ^ P'- P"nti«& frame, and large Walmsley 

 LANCASTER & THOMAS. Pin e St., corner 19th St., Philadelphia, Pa. 



W^^J^ . ^^.^HANGE for objectives or other microscopical appliances a Standard 

 Columbia Bicycle, 48 m. large wheel, in good condition Address »iangara 



J. R. CHATHAM, Xenia, 111. 



