144 



HA R D WICKE ' S S CIE NCE- G SSI P. 



M. W. T. (Cardiff).— Get "Notes on Collecting and Pre- 

 serving Natural History Specimens," price 3-r. 6d. published by 

 Hardwicke & Bogue, 192 Piccadilly, London, and study chapter 

 on "Botanical Specimens," by James Britten, F.L.S. 



G. C. D. — You do not say what kind of objects you wish to 

 mount. Canada balsam can be used in India, but requires 

 hardening by heat before putting on the cover glass. 



Edward Ward. — Your fresh-water algas are — 1. Zygnema 

 rizmlare, Hassall : 2. Zygnema [? sp.) ; 3. Z. nitidum ; 4. Vesi- 

 ciilifera Candollii, Hassall. 



J. B. — Your mounted specimens are, — x, Lyngbia (? sp.}; 2. 

 Rivttlaria gra?iulifera ; 3. Rivularia. 



F. S. St. A. — If our correspondent will send us isolated 

 specimens of the algae she wishes to have named, we will en- 

 deavour to get it done, but we cannot ask those gentlemen to 

 whom we are indebted for the identification of specimens, to 

 search over a quantity of crude material, in order to find some 

 particular form, and to which no clue has been given. 



J. Severs. — Our "Exchange column" is open gratuitously 

 to subscribers of Science-Gossip for their mutual advantage, 

 but we limit the length of the exchanges to about three lines of 

 letter-press. 



J. S. Dickin. — Pritchard's " History of Infusoria " is an old 

 and antiquated book, but the only one in our language before 

 the public. It is rare, and can only be obtained through a 

 secondhand bookseller. Mr. Saville Kent is, we believe, pre- 

 paring a revised manual of " British Infusoria," a work long 

 wanted. Slack's " Pond Life," and Gosse's " Evening's at the 

 Microscope," are both good books for a young amateur. 



W. Roberts. — Your specimens of weevil are Otiorhynclais 

 picipes. O. sulcatiis is a distinct species, easily distinguished 

 from the former. Both are destructive foes to gardeners, al- 

 though the larvae of the latter have a peculiar predilection for 

 potted plants. 



Botanical Exchange Club. — Rules of membership, &c, 

 may be obtained by application to 192 Piccadilly, W. It is time 

 that intending workers should send in their names, addresses, 

 and subscriptions, with a view to work this summer. 



William Bennett (Clehonger). — Your bat is a remarkable 

 earless specimen of the common Rittzr-mouse ( Vesperlilio pipz's- 

 trellus). 



EXCHANGES. 



A specimen of the rare shining moss [Schisiostega pennata), 

 containing many diatoms, sent for really well-mounted slide. — 

 T. Watson, Bank Parade, Burnley. 



Stephen's " British Insects," with coloured illustrations. I 

 have the first four volumes of part i. (i.e. Mandibulata) and the 

 first three volumes of part ii. (i.e. Haustellata) of the above work. 

 Want remainder. Apply to George T. Baker, Hagley Road, 

 Birmingham. 



Microscope (Baker) in case with condenser, polariscope, &c. 

 complete. For .£15 or smaller instrument and cash. Also 

 " Beale on the Microscope."— Rev. C. L. Williams, Aston, 

 Birmingham. 



Authenticated British, European, Asiatic, Indian, American, 

 African, Labrador species bird's eggs. Lists forwarded. Ex- 

 change offers requested. Foreign correspondence specially 

 wished for.— John William, n Priory Road, Sheffield. 



Fine slides of the rare SpJiaroploa annulina, showing fructifi- 

 cation, in exchange for other authentically named freshwater 

 algae, or first class material, diatomaceous preferred. — J. Tem- 

 pore, 249 Moss Lane East, Manchester. 



Wanted, fossils, in exchange for sponges and fossils from the 

 white and red chalk of Yorkshire ; also recent shells, in exchange 

 for British land,- fresh-water, and marine species. Send lists to 

 Rev. George Bailey, Seaham Harbour. 



For unmounted palates of L. litorea, and B. undatum ; send 

 unmounted objects to J. M., 12 Porchester Street, near Clifford 

 Street, Birmingham. 



Well-mounted slides of Aulacodiscus littoris, Aulac. mar- 

 garitaceus, Heliopelta mollis, Trinacria regina, several species 

 of Hemiantus and Isthmia, and a large number of diatomaceous 

 deposits from all countries for slides or gatherings of rare diato- 

 maceae.— Otto A. Witt, 2 Gunnersbury Terrace, Turnham 

 Green, London. 



Good slides offered in return for insects, living or freshly 

 killed, in spirit. More especially the less common Diptera, 

 gadflies, sawflies, mole crickets, and other orthoptera and 

 neuroptera.— G. N. W., 10 Edinburgh Place, Weston-super- 

 Mare. 



Well-mounted slides of anchor, and plates of Synapta gal- 

 licrcna, in exchange for good unmounted material. — W. E. C, 

 Mr. Greasley, White Cottage, Gregory Street, Old Lenton, 

 Nottingham. 



Numbers of "Astronomical Register," "Microscopical 

 Journal," "Nature," and others, to exchange for British bird's 

 eggs.— George W. Coultas, High Street, Bridlington, Yorkshire. 



Am breaking up my noted collection of exquisite and rare 

 exotic butterflies and moths. Also British coleoptera, 8000 

 specimens, 4000 species, mounted on cardboard without pins. 

 Also bird's eggs. Full particulars sent. Wanted in exchange, 

 European eggs. No post cards.— Henry Sissons, Brinclifte, 

 Sheffield. 



Wanted, unmounted material of all kinds, in exchange for 

 microscopic or lantern slides, or cash. — Joseph Severs, Aireth- 

 waite, Kendal. 



In exchange for mounted sections of "Golden Osier " and 

 holly-stems, double-stained, send good slides to A. Alletsee 

 u Foley Street, London, W. 



"The Microscope," by Hon. Mrs. Ward, new cloth gilt, for 

 Suffolk on " Microscopical Manipulation," or Gosse's " Evenings 

 with the Microscope," or Martin's " Manual of Microscopic 

 Mounting," or Cook's "Rust, Smut, Mildew, and Mould."— 

 A. C. King, South Parade, Ledbury. 



Offers in exchange (either in foreign land, or foreign marine 

 shells, the former most acceptable) for any of the following 

 British land and freshwater shells, which I have duplicate speci- 

 mens of at present — namely, J 1 , oblotiga, L. involuta, L. 

 Burnetii, P. ringens, V. pusilla, V. substriata, V. alpestris, 

 V. minutissima, V. angnstior, V. Monlinsiana.—W. Sutton, 

 High Claremont, Newcastle-on-Tyne. 



Exotic insects of every description from India, Peru, China, 

 America, Java, Africa, Ceylon, &c, exchange arranged by 

 letter. Foreign correspondence specially requested. Selections 

 forwarded on approval, before exchanging.— Sissens, Sharrow, 

 Sheffield. 



Living water newt (Lissotriton palmipes) in exchange for 

 living polyzoa, &c— J. B., 36 Windsor Terrace, Glasgow. 



Wanted, in exchange for fossils, seaweeds, and other natural 

 objects, any old MSS. deeds, books, prints, &c, relating to 

 Kent, Thanet, or Margate. — F. Stanley, Margate. 



Pathological crystals, cystin, leucin, tyrosin, &c, in 

 exchange for good mounted or unmounted objects. — J. W., 10 

 Evering Villas, Clapton, E. 



Small packet of diatomaceous earth (Stoneyford, Ireland) 

 sent upon receipt of stamped envelope ; any object of interest 

 will be thankfully accepted. I have some very fine selected slides 

 of diatoms, some arranged in pattern, that I will exchange for 

 fragments of Hyalonema mirabilis, or other good spicula bear- 

 ing sponges.— W. White, 18 Convent Street, Nottingham. 



Offered Hooker and Baker's " Synopsis Filicum," 2nd ed., 

 coloured plates. Wanted, Sach's "Text Book of Botany."— 

 Jephthah Makin, Pendlebury, near Manchester. 



Wanted to exchange for rare plants, the Gagea lutea, and 

 Chrysosplenium alter nifolium — George Hastwell, Darlington. 

 Coral sections, British and foreign shells, fossils, minerals, 

 and polished sections of madrepores ; will take fossils, rough 

 corals, and foreign shells in exchange.— A. J. R. Sclater, Teign- 

 mouth. 



Newt's eggs (living) in exchange for living polyzoa, melicerta, 

 and similar objects. Send to J. B., 36 Windsor Terrace, 

 Glasgow. 



BOOKS, ETC., RECEIVED. 



"Evolution, Old and New." By the author of "Erewhon/ 

 London : Hardwicke & Bogue. 



"Electric Lighting, and its Practical Application." By 

 J. W. Shoolbred, B.A. London : Hardwicke & Bogue. 



" Organic Chemistry." By Hugh Clements. London : Blackie 

 & Son. 



Noad's " Student's Text Book of Electricity." Revised by 

 W. H. Preece. London : Crosby, Lockwood & Co. 



"Proceedings of the Literary and Philosophical Society of 

 Liverpool," vol. xxxii., 1877-78. 



" Entomological Papers." By C. V. Riley. 



" The Silkworm :" being a brief manual of instructions for 

 the production of silk. Washington : Government Printing 

 Office. 



" Midland Naturalist." May. J 



" Land and Water." May. 



" Ben Brierley's Journal." May. 



"Journal of Applied Science." May. 



" Animal World." May. 



"American Quarterly Microscopical Journal." April. 



"American Naturalist." April. 



" American Journal of Microscopy." April. 



"Characeae Americanae." By Timothy F. Allen, LL.D. 

 Part I. 



" Feuille des Jeunes Naturalistes." March. 



" Bulletin de la Societe Beige de Microscopic" February. 



" Marine Engineering News." May. 

 &c. &c. &c. 



Communications received up to 12TH ult. from : — 

 E. D. M.— C. H. D.— T. B. W.— D. D.— A. B. F.— E. E.— 

 W. H. W.— W. K.— C. F. W. T. W.— D. W.— E. M— E. V.— 

 H. P. S.— J. W. S.— C. L. W.— G. T. B.— R. D.— M. W. T.— 

 G. B.— W. B.— L. H.— C. J. W.— J. R. C— F. A. B— J. B.— 

 J. M.— J. G.— E. J. O.— O. N. W.— C. P.— H. W. S.— J. W.— 



T. W. D.— H. J. G.— W. N.— T. S.— A. J. R W. G.— W.T.— 



E. B. K. W.— F. A— J. P. G.— H. M. J. S.— J. H. G.— W. E. C. 

 — G. W. C— S. J. I. A— H. M. H.— H. S.— W. B. S.— A. M. 

 -G. C— A. A.— A. C. K.— J. S. D.— W. S.— R. M.— H. C. B. 

 — \V. L.— J. B.— F. C.-C. W. B.— W. B.— F. S.— H. J. W— 

 J. M.— F. J. G.-A. M. P.— C. B.— W. D. S.— Dr. P. Q. K.— 

 R. H.— W. R.— E. E. E.— G. H.— J. H.— J. 0. B.— H. W. H. 

 -A. J. R. S.-J. W. jun.-&c. 



