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EARDWICKE'S SCIENCE-GOSSIP. 



NOTICES TO CORRESPONDENTS. 



To Correspondents 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 ADVERTiSEMENTS,forthcpurpose of evading 

 the cost of advertising, an advantage is taken of our gratuitous 

 insertion of "exchanges," which cannot be tolerated. 



We 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. 



To OUR Recent Exchangers. — We are willing and helpful 

 to our genuine naturalists, but we cannot further allow dis. 

 guised Exchanges like those which frequently come to us 

 to appear unless as advertisements. 



T. H. C— The eighth edition of "The London Catalogue of 

 British Plants " is published by George Bell & Sons, price iid. ; 

 the " York Catalogue of British Mosses," price dd., by Ben 

 Johnson & Co., Micklegate, York. 



R. C.— Your specimen is the blue flea-bane [Erigeron 

 acris). 



M. B. Davies. — The insect imbedded in amber is a well- 

 preserved dipterous fly, probably a species of Tachina. 



S. Lowe. — You will find a long chapter on fossil sponges 

 (illustrated) in Taylor's "Common British Fossils" (London: 

 Chatto). 



R. A. Cooper. — Write to Messrs. W. Wesley & Son, Essex 

 Street, Strand, for their " Scientific Book Circular." 



G. A. Hankey. — I. The cuticle of leaves is the delicate 

 transparent skin which covers the epidermis. It rarely shows 

 any signs of structure, only markings produced by contact. 

 It can be detached by slow maceration, and then comes off the 

 surface both of the epidermis and hairs. 2. The mould on 

 palm leaves to which you refer is probably Graphiola pheenicis 

 (see Science-Gossip vol. for 1877, page 124). 



M. E. Pope. — Your specimen is a variety of the meadow 

 orchis [O. morio). 



R. C. C— The specimen enclosed is evidently a very remark- 

 able variety of Cardaniine pratensis. Send a specimen to the 

 Secretary of the Botanical Record Club. 



H. Roberts. — Many thanks for your kind offer. Will you 

 send us a short specimen of the sort of thing you mean ? 



EXCHANGES. 



Offered, six different specimens of Scotch granite, one 

 German, and one Sweden, polished on one side and rough on 

 other ; also marine shells. Wanted, Newman's " British 

 B^itterflies and Moths," or what offers?— W. D. Rae, 9 Clare- 

 mont Terrace, Alpha Road, Miilwall, London, E. 



Wanted, Maltwood's finder. Offered, magic-lantern, small 

 telescope, micro-slides or objects, dried plants, &c. — G. H. 

 Bryan, Thornlea, Trumpington Road, Cambridge. 



Wanted, Morgan's" Animal Biology," Marshal and Hurst's 

 "Practical Zoology," Prantl's "Botany," Bower's "Practical 

 Botany," Foster's " Embryology," Howe's "Atlas of Biology." 

 Must be cheap, in good condition, and recent editions. What 

 offers to — Shoosmith, Stopsley, Luton, Beds. 



Wanted, Helix arbustorum, var. viarinorata. Will give 

 H. arbustorum, var. pallescens, in exchange. — H. Milnes, 

 Winster, near Derby. 



Wanted, Berkeley's "Outlines of Fungology." Will give 

 in exchange Beale's " Microscope." Also wanted, mosses, 

 lichens, and other cryptogams. — C. F. Rea, S.S.M., Black- 

 heath, S.E. 



Science-Gossip, six vols., unbound, including 1884 and 1885, 

 with plates; Milner's "Gallery of Geography," twenty-fbur 

 i^. parts; last two vols, of "American Monthly Microscopical 

 Journal; also "Manual of British Coleoptera," by Stephens, 

 good as new. Wanted, tricycle, or botanical books, Cooke's 

 " Freshwater Algse," good micro mounts, &c. — J. C. Black- 

 shaw, 179 Penn Road, Wolverhampton. 



Offered, Science-Gossip for 1890, Karl Russ's " Speaking 

 Parrots," Greene's "Amateur's Aviary." Wanted, back vols. 

 of Science-Gossip, " Selbome Magazine," scientific works, 

 gjc.— H. Roberts, 60 Princess Road, Kilburn, London. 



Wanted, "Insects at Home" (Wood), or other work on 



British insects. Offered, "Insects Abroad" (1883).— Rev. X., 

 12 The Park, Ealing, W. 



Will give is. dd. for a clean copy of "The Zoologist" for 

 January, 1881. — Chas. Oldham, Ashton-on-Mersey. 



Any entomological specimens (of whatever order) would be 

 gratefully received from anyone having duplicates, and having 

 no use for same. Box sent (prepaid) and return postage. — 

 T. R. Hamilton, 11 Crozier Road, Mutley, Plymouth. 



Offered, "The Entomologist," vols. 16 to 21 bound, and 

 vols. 22 and 23 unbound ; " Builder," vols. 56 and 57 bound, 

 vols. 55, 59, and greater part of 58 unbound. Exchange for 

 foreign land shells, conchological or other scientific books. — 

 G. S. Parry, 18 Hyde Gardens, Eastbourne. 



Offered, 325 stamps, all different, many of them rare. 

 Wanted, British land and freshwater shells, foreign marine 

 shells, or offers to— P. R. Shaw, 48 Bidston Road, Oxton, 

 Birkenhead. 



Wanted, any land or sea shells from the West Indies. 

 Have a number of natural history and other books to offer in 

 exchange. List sent. — W. Jones, jun., 27 Mayton Street, 

 Holloway, London. 



Wanted, a few good fossils from Devonian or old red sand- 

 stone. A good equivalent given in exchange in minerals, such 

 as fluor spar, galena, malachite, travertine, radiated calcite, 

 chalcedony, blende, crystals of quartz, selenite, pyrites, calcite 

 and others, or good carboniferous fossils. — P. J. Roberts, 

 II Back Ash Street, Bacup. 



Wanted, fossils from various localities. A large number of 

 good duplicates offered in exchange. — Thomas W. Reader, 

 171 Hemingford Road, London, N. 



Wanted, specimens of British and foreign echini (sea 

 urchins), or crabs, in exchange for British land, freshwater, or 

 marine shells or fossils. — F. Stanley, M.C.S., Clifton Gardens, 

 Margate. 



West African bird-skins in exchange for books (must be 

 latest editions) on natural history.— J. H., 19 Connaught 

 Street, W. 



Eleven vols, of Science-Gossip, 1880-90, including the ^ 

 coloured plates, for rare British shells or eggs, foreign shells, 

 or offers. — Thos. H. Hedworth, Dunston, Gateshead. 



Helix lainellata. Papa ringens, and numerous other species 

 offered for varieties of British land and freshwater shells. 

 Also wanted, Continental and foreign land and freshwater 

 shells. — Rev. John Hawell, Ingleby Greenhow Vicarage, 

 Northallerton. 



For a slide of diatoms, or botanical mount showing placenta, 

 tion, &c., I will send a tube of Chara showing cyclosis. — J. C. 

 Blackshaw, 179 Penn Road, Wolverhampton. 



West Indian, South .4.merican, and Australian land shells 

 wanted in exchange for European, South African, or North 

 American land, freshwater, and marine. Any foreign corre- 

 spondence esteemed. — S., 40 Braybrooke Road, Hastings. 



Ur.io pictorum, from a Cheshire locality, offered in exchange 

 for good land and freshwater shells, British or foreign. — R. 

 Cairns, Queen Street, Hurst, Ashton-under-Lyne. 



Wanted, land and freshwater shells, in exchange for living 

 Pupa secale, and others. Several vols, of Science-Gossip and 

 other books offered for shells. — H. T. Smith, 11 Oakfield 

 Place, Clifton, Bristol. 



BOOKS, ETC., RECEIVED FOR NOTICE. 

 " Popul.-ir Lectures and Addresses," by Sir William Thomson, 

 LL.D., F.R.S., &c., vols. i. and iii. (London: Macmillan & 

 Co.). — "Lessons in Elementary Biology," by Professor T. 

 Jeffery Parker (London: Macmillan & Co.). — "The Making 

 of Flowers," by Professor G. Henslow (London: S.P.C.K.).— 

 "The Species of Epilobium occurring North of Mexico," by 

 Professor Trelease. — "Notes on Indian Rotifers," by H. H. 

 Anderson. — " The British Noctuse and their Varieties," by 

 J. W. Tutt (London : Swan Sonnenschein & Co.). — " British 

 Cage Birds," Parts 13 and 14. — "Glimpses of Nature," by Dr. 

 Andrew Wilson (London : Chatto & Windus). — "The Mediter- 

 ranean Naturalist," No. i. — "American Microscopical Jour- 

 nal." — "The Microscope." — "The American Monthly Micro. 

 Journal." — " American Naturalist." — " Canadian Entomolo- 

 gist."— " The Naturalist."— The Botanical Gazette."— " The 

 Gentleman's Magazine."— "The Midland Naturalist."— "The 

 Essex Naturalist." — "The Garner." — " Feuille des Jeunes 

 Naturalistes."—" Journal of Microscopy," &c., &c. 



Communications received up to the ioth ult. from : 

 J. E. L.— A. J. H. C— J. H.— F. B.— C. G.— A. B.— G. H. B. 

 — W. H. S.— A. E. B.— E. B.— W. D. R.— J. H. C— W. W.— 

 Dr. A. I.— M. D. D.— C. F. G.— J. W. W.— W. J. S.— 

 H. H. A.— J. W. B — D. E. C— T. D. A. C— E. R— H. E. G 

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

 J. C B.— H. R.— H. T. M.— C. O.— T. R. H.— E. H. R.— 

 W. E. S.— G. S. P.— P. R. S.— Dr. R. L. R.— J. W. R. S.— 



F. S.-S. P.— T. W. R.— J. H.— W. J., jun.— P. J. R.— 



G. A. H.— J. C. B.— E. L. S.— J. C. S.— R. C— H. T. S.— 

 J. H.— T. H. H.-J. S.— F. B.-A. H. H.— F. B.— H. M.— 

 &c., &c. 



