i68 



HARBWICKE'S SCIENCE-GOSSIP. 



NOTICES TO CORRESPONDENTS. 



To COKRESPONDENTS AND EXCHANGERS. — As we nOW 



publish Science-Gossip earlier than formerly, we cannot un- 

 dertake to insert in the following number any communications 

 which reach us later than the 8th of the previous month. 



To Anonymous Querists. — We must adhere to our rule of 

 not noticing queries which do not bear the writers' names. 



To Dealers and Others. — We are always glad to treat 

 dealers in natural history objects on the same fair and general 

 ground as amateurs, in so far as the "exchanges" offered are fair 

 exchanges. But it is evident that, when their offers are simply 

 Disguised Advertisembnts, forthe purposeof evading the cost 

 of advertising, an advantage is taken o{ ovct gratuitous insertion 

 of " exchanges " which cannot be tolerated. 



Wk request that all exchanges may be signed with name (or 

 initials) and full address at the end. 



Special Note. — There is a tendency on the part of some 

 exchangers to send more than one per month. We only allow 

 this in the case of writers of papers. 



G. Rees.— The address of the Secretary of the Selborne 

 Natural History Society may be obtained by addressing him, 

 c/o Elliot Stock, Publisher, 64 Paternoster Row, London. All 

 information with reference to the society and its publication 

 can te obtained of him. 



Mr. James Bowman writes: "Will you kindly inform Mr. 

 Whatmore that I have in preparation a further article on 

 Formica r?//a, in which I shall detail some fresh experiments 

 as to the hearing powers of ants. The experiments have further 

 convinced me that the ' hearing ' of Formica ru/a, and, I 

 suppose, every other species of ant, is very acute." 



J. N. — We have no doubt you will get all the articles you 

 require either of Mr. E. Hinton, 12 A'orley Road, Upper 

 Hoiloway, London ; of Mr. Walter White, Litcliam, Swaffham ; 

 or of Messrs. Christy, 25 Lime Street, London. 



H. GiRAUX (Paris). — Our exchange column is free to sub- 

 scribers; but it is expected that exchanges will not exceed 

 three or four lines, unless the exchanger is a contributor. 



A. W. (Headingley). — Spiders' webs, or rather their lines, 

 are used in transit instruments to render observation easy. 

 They are mounted at right angles to each other; generally 

 five vertical lines are crossed by three horizontal ones. Nothing 

 in nature has been found equal to spiders' webs for this purpose. 

 At the Melbourne Observatory, we believe that a certain kind 

 of spider is kept for the sake of using the webs they .--pin for the 

 above purpose. 



EXCHANGES. 



Wanted, to exchange a folding camera and three best 

 double backs for plates up to 8 x 5, for high power microscope 

 objective by some good maker. — E. B. Fennessy, Pallasgreen, 

 Limerick. 



Wanted, any back numbers of Science-Gossip, "Ento- 

 mologist," "Entomologist's Monthly jMagazine," or "Journal 

 of Conchology." Offered, rare foreign marine shells. — H. L. T., 

 Woodside, Rowditch, Derby. 



Smith's " Diatomacea;," vol. i., Beal's " Micro in Medicine," 

 Baker's " Employment for the Micro" (original plates, i/^^s, 

 whole calf), Ross's F eye-piece, twelve quarterly parts " Pustal 

 M. J.," 1882-5, twelve slides, test diatoms, scales, &c. What 

 offers? — J. E. Lord, Rawtenstall. 



Cox's " Brit. Coleoptera," Harrison's " Geology of Counties 

 — England and Wales," Brodie's "Fossil Insects of Secondary 

 Rocks," and other good books : also first-class lias fossils, 

 including reptilian and fish remains, ammonites, rare gastero- 

 poda, &c., for good scientific and natural history works. — 

 H. E. Quilter, 77 Conduit Street, Leicester. 



Wanted, rarer British marine and land shells, also British 

 eggs, all kinds. Exchange British shells and odd numbers of 

 Science-Gossip. — J. T. Lightwood, Lyiham. 



Wanted, twelve or more vallisneria roots. Will give in 

 exchange some "Dog's Bay sand," micro .seeds, and some 

 beautiful plant scales and hairs. — Henry Hyde, Aidwick 

 Museum, Manchester. 



Limncea glabra in exchange for Acme livcata, Helix lamcl- 

 lata, II. obvoluta, Limtiaa glutinosa, L. invotnta, Physa 

 acuta, Succinea ohlonga, Testacella haliotidca (shell), Vertigo 

 angustior, V. piisilla, V. pygmcea, V. substriata , V. tuntida, 

 Zonitcs radiattiltis, Z. excavaius, Z. piirits. Anxious to ex- 

 change British land and freshwater shells for foreign ones ; 

 American and Continental cliietly wanted. — J. W. Williams, 

 Mitton, Stourport, Worcestershire. 



Tk.\nsverse sections of poicupne quill, mounted and un- 

 mounted, in exchansje for other gond slides or unmounted 

 objects of interest. — W. J. W. Stocks, High Street, Uppingham. 



Offered, skin of snake, ten feet long. Wanted, exotic 

 insects or offers. — J. W. Neville, Wellington Road, Hands- 

 worth, Birmingham. 



Diamond circle cutting tool for cutting thin glass in circles, 

 lever micrometer measuring instrument by Ross, for gauging 

 this glass, in exchange for first-class objectives-, or special 

 grouped diatoms or other choice show objects for exhibition 

 purposes. — M., 20 Be'size Crescent, Hampstead, London. 



Wanted, Wood's " Insects at Home," Figuier's " Insect 

 World," or such, in exchange for foreign insects. — H. M., c/o 

 Dr. Burford, 13 Greville Road, Kilburn, N.W. 



Wanted, Huxley's "Anatomy of Vertebrated Animals," 

 also a skull of a dog; good exchange given.— H. Parritt, 

 103 Camden Street, Camden Town, N.W. 



Orbulites striata, Polystomella crispa, Placcniula asteri- 

 sans, club-shaped spirolina, trochus-shaped rotulites, minute 

 corals and .shells, echini spines, fine objects for the microscope, 

 in exchange for slides of rock and diatomacese. — A. J. R. 

 Sclater, .M.C.S., Bank Street, Teignmouth. 



Well- .mounted sections of liver fluke, amphioxus, and 

 earth-worm, &c., offered for other objects, unmounted, or 

 books. — Alfred Draper, 179 Cemetery Road, Sheffield. 



What offers for a Steward's guinea microscope with three 

 powers, inclines to any angle, in polished case, with forceps, 

 nearly new; also a good collection of minerals? — A. G. Ham- 

 mond, 10 St. John's Hill, New Wandsworth, S.W. 



Wanted, a three-inch G and D eye-piece by good makers, 

 also "Introduction to Entomology," by Kirby and Spence. — 

 W. F. Kelsey, Maldon. 



Mr. C. Carus-Wilson would be ghad to have the address of 

 some one who would polish a quantity of stones at a reasonable 

 rate. Address — AUthomc, W. Bournemouth. 



Side-blown eggs of eider duck, oyster catcher, Richardson's 

 skua, com. gull, lesser b. b. gull, puffin, guillemot, black 

 guillemot, herring gull, common tern, Arctic tern, ringed 

 plover, green cormorant, great skua, in exchange for others 

 not in uiy collection. Also a quantity of the Oamaru diatom 

 deposit (good), and some other "material," in exchange for 

 really good micro s ides. — T. E. Doeg, Evesham. 



1500 fossils from chalk, greensand, lias, coal measures, 

 Silurian and other beds, all localized, and many named. (Jft'ers 

 wanted. — J. A. Floyd, 5 Hospital Road, Bury St. Edmunds. 



Fine specimens of Ananchytes ovatiis from the chalk, also- 

 other chalk and Tertiary fossils in exchange for shells, lepido- 

 ptera, fossils. — Frederick Stanley, M.C.S., Margate. 



Wanted. — Galls, freshly gathered, from all kinds of plants, 

 and parasites from animals. Will give in exchange lepidoptera, 

 coleoptera, or birds' eggs. — S. L. INlosley, Beaumont Park 

 Museum, Huddersfield. 



Offered, H. ?iemoralis and hortensis from various localities, 

 H. virgata, caperata, Tellina tenuis, Jabula, balthica, and 

 Solen ensis. Wanted, land, freshwater, and marine shtUs. — 

 Thos. H. Hedworth, Dunston, Gateshead. 



Wanted, foreign shells and naturalistic books and magazine; 

 in exchange for choice micro slides, diatoms, parasites, ana- 

 tomical, double-stained botanical, &c. — R. Suter, 5 Highweek 

 Ro.ad, 'rottenham, London. 



Wanted, ammonites of any species, for polishing, from 

 I inch to 3 inches in diameter. Good exchange in ferns, &c. — 

 H. W. S. Grimshaw, Mossley Road, Hurst. 



British mosses (named and localized), including many rare 

 species from Scotland and Wales, offered for good micro slides. 

 Zoophytes, insect and vegetable dissections wanted. — J. J. C.,. 

 9 Wythenshawe Road, Sale, Manchester. 



Wanted, smoking pipes of primitive or early design, chiefly 

 Russian and Siberian ; also fishing-hooks of shell, bone, wood, 

 &c. Ofl'ered, ethnological specimens, rare shells, crustaceans, 

 &c. — Ed. Lovett, West Burton House, Outram Road, Croydon. 



. BOOKS, ETC., RECEIVED. 



"The Flora of Maidstone." by H. Lamb.— "The Uses of 

 Plants," by G. S. Boulger (London: Roper and Drowley). — 

 "The Middle Lias of Northamptonshire," by Beeby Thompson 

 (London: Simpkin, Marshall and Co.). — "Report as to the 

 best system for the Maintenance of ]\Iain Roads in the County 

 of Hereford," bj' W. A. Smith. — " Letters from the Lakes," by 

 Philip Kempferhausen (Ambleside: Geo. Middleton). — "Study 

 of Lichens," by J. A. Martindale (Ambleside : Geo. Middleton). 

 — " Flora of Switzerland," by A. Gremli (London: David Nutt). 

 — "Illustrated Manual of British Birds," Parts xi.-xiv. — 

 " Insect Life." — "Fanciers' Journal." — "British Dogs." — • 

 "Annals and Magazine of Natural History." — "The Ento- 

 mologist." — "The Selborne Magazine." — "The Century 

 Magazine." — "The Amateur Photographer." — "The Garner. ' 

 — "The Naturalist." — Cassell's "Technical Educator." — "The 

 Botanical Gazette." — " Belgravia." — " The Gentleman's Maga- 

 zine." — "American Monthly Microscopical Journal."—" Wesley 

 Naturalist." — "Midland N.'.turalist." — "Research." — " Feuilles 

 du Jeune Naturaliste." — "The American Naturalist," &c. &c. 



Communications received up to the 13TH ult. from : 

 J. L. M.— C. N. P.— G. C— E. S.— A. G. H.— T. E. D.— 

 W. B. B.— R. W. C— W. J. S.— H. B. B.— F. M. H.— 

 I. W. S.— P. J.— I.— H. K.— H. M.-W. B. P.-M. E. P.— 

 O. V. D.— J. A. W— A. J. F.— E. B. F.— W. J. S.— W. H. D. 

 -A. J. J.— H. L. T.— I. E. L.— H. E. Q.— H. F.— W. A. T. 

 —A. L. C— H. M.— J."W. B.— I. T. L.-J. W. S.-C. C. W. 

 — H. P.— C. W. H. B.— G. K.— J. W. W.— J. W. N.— A. J. S. 

 — W. F. K.— A. D.— H. H.— f. C— R. S.— G. T.— T. G.— 

 T. A. D.— J. C— T. H. A.— J. F.— J. H.— T. H. H.— S. L. M. 

 — F. S.-R. M. W.— A. G. T.— J. N., &c. &c. 



