192 



HARD WICKE 'S S CIE NCR - G SSI P. 



W. Mills. — You will find Pascoe's "Zoological Classifica- 

 tion " a capital handy book of reference. It gives tables of the 

 sub-kingdoms, classes, orders, &c., of the entire animal king- 

 dom, together with their characters, and lists of the families 

 and principal genera. (London : Van Voorst ; price -js. 6d.) 



Mk. Dixon. — It is impossible to tell the insects from the 

 sketches sent. They appear to be some species of Podura. 

 Can you not send a specimen ? 



T. Jones. — Get Norman Lockyer's " Lessons in Astronomy," 

 price Si'. 6d. (London : Macmillan), or Plummer's " Elementary 

 Astronomy," price is. (Glasgow: \V. Collins & Sons). 



A. O. (Winsdar). — The grass you send is not the Avena as 

 you suspect, but the Arrkenatheriim avenacevm. The work 

 you name is not very reliable. 



J. H. C. R. (Switzerland). — Thanks for specimens of O/krys 

 arachnitis. You are quite right, it takes two or more years for 

 the bulb to flower. 



W. G. R. (Liverpool). — It is one of the Planes, or, Platamis 

 accrifolia, a tree generally grown in shrubberies and planta- 

 tions for P. occidenialis. 



J. C. S. (Penrith). — No. i is the Orchis incarnata, L. No. 2 

 O. viaciilata, or No. i may pro\e to be the O. divaricaia, 

 Reich., a form closely related to O. viaciilaia; it is however 

 difficult to tell in dried specimens. 



S. J. H. — Apparently they are all blights. No. 2 is Hazel- 

 blight [Phyllactinia guttata). If you procure " Microscopic 

 Fungi," by Dr. Cooke, it will make your researches delightful. 



N. F. D. (Romford). — Your paper on bifurcation will have 

 our attention shortly. 



J. S. (Bolton). — We are sorry to say your specimens are too 

 small and imperfect to name accurately. No. 4 is Bryniii argen- 

 teuin. 



A. M. P. (Newport) — The small insects which issued from 

 your chrysalid are Ichneumon flies. Their mother pierced the 

 body of the caterpillar, and deposited her eggs there ; so that 

 when the caterpillar passed into the chrysalis state it had the 

 young parasites in'its body. There they hatched and developed. 



EXCHANGES, 



SpLENDiDLY-preserved and correctly-named Swiss Alpine 

 plants. Price dd. each.— Address, Dr. B., care of Editor of 

 Science-Gossip, 214 Piccadilly. 



Wanted, March number of Science-Gossip ; six well- 

 mounted and interesting micro-slides offered in exchange. — 

 R. L. Hawkins, 24 Baker Street, W. 



Well-mounted slide of diatoms Sytzcdra capitata and Cocco- 

 ncma cymhifortne in exchange for other objects of interest. — 

 T. B. Forty, Market Square, Buckingham. 



Sever.^l specimens of Ceratodtis polymorphiis, RhcFtic, 

 Aust; also large collection of Rhaetic fossils from Aust. What 

 ofiers ? H. B. Capell, Great Easton, Dunmow, Essex. 



Wanted, to exchange splendid double-barrel rifle, muzzle 

 loader, of Charles Lancaster's make, very finely engraved and 

 little used, cost ;^8o and has case and all fittings, for a good 

 binocular microscope by good maker ; free particulars to be given, 

 references exchanged. — lilark L. Sykes^ Pendleton, Manchester. 



H. lapicida, H. riipcstris, C. diihia or C. laininata, a number 

 of any of the above for single specimens of //. poinatia, U. 

 pisa7ia, H. Carthusiana or P. secale. — W. Webster, National 

 School, Lofthouse, Wakefield. 



For exchange, eggs of common guillemot, herring-gull, 

 mallard, blackhead gull, &c. — John Murray, 10 St. Paul's 

 Street, Aberdeen. 



Offered, nests and clutches of dipper, clutches of sparrow- 

 hawk, kestrel, hooded crow, magpie, swift, ringed plover, coot, 

 cormorant, herring-gull, kittiwake, 11 cl. mute swan eggs 

 of gannet, puffin, varieties of razor-bill, and many others, one 

 holed with data. Send list of duplicate clutches and desiderata. 

 R. J. Ussher, Cappah, Lismore, Ireland. 



For slide of diatomaceae from Mackintosh Lake, Canada, 

 send any good slide of tropical gatherings to Alfred W. Griffin, 

 Saville Row, Bath. 



Will send one dozen of fine young plants of Vallisneria for 

 halfa-dozen .sections well-mounted for the microscope. — John 

 Simm, West Cramlington, Northumberland. 



A FEW well-mounted miscellaneous slides in exchange for 

 other well-mounted slides of interest. — H. Abbott, 40 St. Peter's 

 Street, Lowestoft. 



FKiiSH plants of sundew [Drosera rotundifolia] sent for good 

 slides or material. — VV. Sim, Gourdas, Fyvie, N.B. 



Wanted, specimens of stag beetle and male cricket. Will 

 give micro-sliaes or cash in exchange. — J. Moore, 86 Porchester 

 Street, Birmingham. 



New slide for polariscope, transparent crystals of sulphur. 

 Other micro-slides for sale or exchange. Wanted botanical 

 works or fret saw. — A. Wire, Kreochyle Co., Leytonstonc, E. 



W.\NTED, unmounted pathological or anatomical material, 

 slides. Northern Micro^copist, 1881-3, or turn-table, in exchange 

 lor slides mounted of the material, or " Science Monthly," 

 vol i. new, in parts, " Boys' Own Paper," vols. v. (and vi. not 

 yet finished), monthly parts (except vol. i.), Cassell's " Sea," 

 vol. i., perfect condition, clean. — V. A. Latham, F.M.S., 15 

 ■J horncliff Grove, Oxford Road, Manchester. 



Offered, first-class slides of rare diatoms (selected), also^ 

 pieces of Hyatonema Sicboldii and Synapta Bessellii in ex- 

 change for unmounted diatomaceous gatherings. — Dr. Otto 

 N. Witt. E. 8. 13. Mannheim, Germany. 



Six plants of Drosera rotundifolia free by post, offered in 

 exchange for well-mounted micro-slide. — Thos. Richardson,, 

 Rose Cottage, Heath End, Farnham, Surrey. 



Fine L. stagnalis and P. cornens, P. spirorbis, P. vivi- 

 para, also number of foreign postage stamps. Desiderata, 

 British or foreign shells. — W. Hewett, 26 Clarence Street, York. 



Pathologic.-\l material wanted : also Stirling's " Practical 

 Histology," and Woodhead's "Pathology." First-class slides 

 in exchange — A. J. Doherty, 33 Burlington Street, Oxford 

 Road, Manchester. 



Offered L. C., 7th edit., Nos. 45, 121, 133. 147, 161, 197, 

 275, 280, 326, 398, 406, S59, 914, 924, 1008, 1349, i36i,_ 1379,. 

 1422, 1447, 1448, 1458, I494< 1501, 1504, 1515, 1577, send lists.— 

 H. J. Wilkinson, 17, Oglclorth, York. 



A couple of young long-tailed field mice (^Mus sylvaticus) in 

 exchange for a pair of harvest mice, or books on natural history. 

 — F. Hayward Parrott, Walton House, Aylesbury. 



Exchange Transactions of the Hudd. Nat. Soc, containing 

 complete catalogue of the Lepidoptera of the district, for similar 

 publications of other socielies. — S. L. Mosley, Hon. Sec, Beau- 

 mont Park Museum, Huddersfield. 



To Collectors. — I will give the first four half-crown parts 

 of my " Varieties of British Lepidoptera " to the person who,, 

 before Dec. ist, shall send me the largest number of different 

 species of insects of all orders (except Lepidoptera) especially 

 Diptera. Usual specimens not objected to, but date and 

 locality indispensable. — S. L. Mosley, Beaumont Park Museum, 

 Huddersfield. 



Wanted, fresh specimens of stag beetle and male cricket for 

 dissecting purposes. — Wilton's Zoological Station, Fairfield, 

 Buxton. 



Wanted, all classes of Reptilia, British and foreign, alive 

 and in spirits, in large quantities : foreign correspondents espe- 

 cially requested. Also alive, about 500 bull frogs of America,- 

 and about 5000 common frogs of England. Also the following, 

 alive in large quantities : hedgehogs, moles, common snakes, 

 tree frogs, natterjack toads, tortoises. Helix pontatia, blind 

 worms, and lizards. — E. Wade Wilson, Fairfield, Bu,xton. 



W.A.NTED marine animals for dissection, specially .octopus 

 and sepia, also any other type specimens. — Zoological Station, 

 Fairfield, Buxton. 



Eggs of snipe, grebe, plover, black-headed gull, teal, coot, 

 and waterhen (all Yorkshire specimens) ; also the following 

 shells: Limiica stagnalis and Planorbis Cornells, very fine; 

 also Limnea glabra, L. peregra, va.x. /ragilis of L. stagnalis, 

 P. hypnorum, D. polyinorplia, and P. vivipara ; desiderata 

 very numerous eggs and shells. — W. Hewitt, 26 Clarence Street, 

 York. 



Shells. — Helix pisatta, several varieties. H. aspersa, var. 

 minor s.n6. conoidea. Crustaceans : Porcellana platycheles, P. 

 longicornis, Portiimnus latipes (rare) : Pagunis Bernkardns, 

 Corystes Cassivclaunus, &c. What offers in exchange ? — C. 

 Jefferys, 15, Warren Street, Tenby. 



BOOKS, ETC., RECEIVED. 

 "The Life of the Fields," by Richard Jeffrey. London r 

 Chatto & Windus. " Practical Taxidermy," by Montagu 

 Brown, 2nd ed. London: Gill. " The Blowpipe in Chemistry, 

 Mineralogy and Geology," by Colonel Ross, F.G.S. London; 

 Crosby Lockwood & Co. Annual Report RIanchester Micro- 

 scopical Society, 1883-84. — " Studies in Microscopical Science," 

 edited by A. C. Cole. — " The Methods of Microscopical Re- 

 search," edited by A. C. Cole. — " Popular Microscopical 

 Studies." By A. C. Cole. — "The Gentleman's Magazine." 

 — " Belgravia." — "The Journal of Microscopy." — "The 

 Science Monthly." — "Midland Naturalist." — " Ben Brierley's 

 Journal." — " Science Record." — " Science." — "American 

 Naturalist." — " Naturalist's Leisure Hour" — The Electrician 

 and Electrical Engineer." — " Canadian Entomologist." — 

 "American Monthly Microscopical Journal." — "Popular 

 Science News." — " The Botanical Gazette." — "Revue de 

 Botanique." — "La Feuille des Jeunes Naturalistes."— " Le 

 Monde de la Science."—" Cosmos, les Mondes," &c. &c. &c. 



Communications received up to iith ult. from : — 

 W. J. S.— Dr. P. Q. K.— G. D. H.— W. H. H.— T. A. W.— 

 P .S. T.-M. L. H.-J. G.-C. M.-T. J.— L. E. A.-W. W. F. 

 -CD. B.-Dr. O. A. W.-M. L. S.-B. P.-C. F. W. T. W. 

 — W G. H. T.— J. P. G.— R. F. Z.— Mrs. G. F. H.— W. E. B. 

 — W. R.-D. B.— Dr. S. A.— H. B. C-T. B. F.-J. E. L.- 

 H. L. E.— C. B. M.— M. L. S.— S. J. H.— P. L.— A. J.— 

 W. W.-R. J. U.— J. M.— A. W. G.— H.A.— J. S.-H. F.— 

 V A. L.-G. W. S.-A. P. W.-J. M.-T. D. A. C.-W. S.- 

 A. J. D.-A. O.— S. L. M.-H. S. W.— S. S.— W. H.— H. J. W> 

 -C O.-S. T. D.-F. H. P.-E. L.-T. W.-H. G. G.— F. K. 

 -G H. K.-L. M.-A. D.-Dr. J. H.-W. A. P.-Dr. C. P. C. 

 -C. J.-R. A. F.-T. R.-W. G. R.-A. J. D.-F. B.- 

 W. H. H.— H. B., &c. 



