24 



HARD WICKE'S SCIENCE- G OS SIP. 



J. F. (Ottawa, Canada). — We have no work that can be 

 recommended on the subject : however, we are happy to inform 

 you of one shortly to be published by the Kew authorities. 



Alpha (Manchester). — It is one of the pondweeds (Pota- 

 mogeton), we should not like to name it in its present state ; a 

 grass is also mingled with the specimen. 



A. D. M. (North Malvern). — You have marked the list 

 correctly ; hope the parcel will please you. 



J. P. T. (Portland, U. S. A.). — We are not aware of any 

 special monograph ; Sprengel gives a full list. In the first volume 

 of Science-Gossip, a capital monograph is published of the 

 British species ; we should be glad at any time to help you. 



F. H. A. (Fishbourne). — It is, we believe, the true Atriplex 

 Smithii of Syme, although it is an intricate genus. 



S. E. L. (Penrith). — The name of the wild flowers were as 

 follows: — i. Atriplex Babinglonii ; 2. Carex Jiava ; 3. Carex 

 dioica ; 4. y uncus squarrosiis ; 5. Lycopodium clavatnm ; 

 6. Juncns bltfonius[?) ; 7, Carex \arenaria; 8. Sclerocldoa 

 loliacca. We wish all our correspondents would send us as good 

 specimens as yours. 



E. Straker. — " Les Mondes," published weekly, and 

 " Feui !e des Jeunes Naturalistes" (monthly), are French 

 journals, with much of the same scope as Science-Gossip. 

 The latter may be obtained from M. Dollfus, 55 Rue Pierre- 

 Charron, Paris. The price is 4 francs a year, forwarded abroad. 



J. R. Neve (Kingston). — The shell you refer to is one of the 

 characteristic species of the red crag, and is called Trophon 

 (or Fusus) co/itrarius. See Taylor's "Geological Stories," 

 chapter on "The Crags." The "talc" is not that mineral, 

 but Selenite washed out of the London clay. 



George Linton (Barrow). — The distinctive features between 

 Echinus sp/iwra and E. viitiaris are as follows : the former is, 

 in the first place, much larger, more spherical (as its specific 

 name imports), for it is nearly globose ; whilst the latter has a 

 very depressed shape of test, the rows of pores are not parallel, 

 there are three pairs to each row, and the shiny, smooth spines 

 are usually tipped with a plum-coloured tint at their ends. 



Quetelse. — The object in the box is a millepede, called 

 Gcophilits electricus, not uncommon on damp hedge-banks, 

 where it leaves a phosphorescent trail. You might purchase a 

 platyscopic lens from Mr. Browning, optician, 63 Strand, 

 London, about the price you name, which would answer all 

 your requirements. 



E. Lovett and H. W. — Accept our best thanks for donation 

 of slides. 



' EXCHANGES. 



r Wanted, Galium oc/irolencunt, Valerianella mixta, Fu- 

 maria Vaillantii, Viola stagnina, Dianthus plumarius, Gen- 

 tiana Germanica, Alisma nutans, Drosera obovata, for other 

 rare and critical plants. — G. C. Druce, 118 High Street, Oxford. 



A good triple nose-piece, nearly new, in exchange for a good 

 one inch objective. — J. S. Harrison, 32 South Street, Hudders- 

 field. 



A good slide of Gomphoncma gcmiriatum, for any other 

 good slide.— H. G., 2 Talfourd Place, Talfourd Road, Peckham. 



Duplicates of about twenty species of marine shells from 

 South Africa (mostly small). Wanted any land or freshwater 

 shells. — A. H. Hinton, Walthamstow, Essex. 



Wanted, to correspond with some one studying the fungi for 

 the purpose of exchanging specimens, notes, and sketches. — 

 G. Massee, Oak House, Oak Road, Falsgrave, Scarboro'. 



Good specimens of Euthora cristata, Callithavinion 

 Americanum, and many other American alga, to exchange 

 for British and other species of algae. Would particularly like 

 authentic specimens of different species of Callithamttion ecto- 

 carpus, and Cladophora. — Frank S. Collins, Maiden, Massa- 

 chusetts, United States of America. 



For exchange or sale, an excellent lathe, with slide rest, 

 adapted for hard wood or metal turning. — Address, T. C. 

 Maggs, Yeovil. 



Buitish crustaceans in exchange for others. — G. SherriffTye, 

 62 Villa Road, Handsworth, Birmingham. 



British plants, 500 or more duplicates, many rare and local, 

 named, unmounted, offered in one or more lots, for British 

 shells, birds' eggs, fossils, or minerals, or other offer. — William 

 Jordan, Cockfield, Sudbury, Suffolk. 



A few flint implements from East Yorkshire, in exchange for 

 specimens from other localities, fossils or recent shells. — Rev. 

 George Bailey, Seaham Harbour. 



Wanted, Newman's " British Moths ;" will give in exchange 

 lepidoptera. — James Smith, 1 Belle Vue Terrace, Clifton Hill, 

 Bristol. 



Exotic butterflies and beetles ; and well- mounted diatoms to 

 exchange ; desiderata, side-blown British birds' eggs, any sort, 

 or any of the current numbers of Yarrel's " Birds" after No. 2. 

 — R., 44 Blenheim Street, Newcastle-upon-Tyne. 



Wanted, micro slides, B or c eye-pieces, or anything micro- 

 scopic, for telephones.electrical machine, and electrical, galvanic, 

 and chemical materials and reagents, and books. — Thomas G. 

 Nicholson, Mere Street, Diss, Norfolk. 



Merlin, sparrowhawk, red grouse, oyster-catcher, curlew, 

 lesser black-backed gull, and others, desiderata, British birds' 

 eggs. — A. Stevenson, 5 Garthland Lane, Paisley. 



Last three volumes (commencing new series) of "Popular 

 Science Review," well bound, half russia, offered for any six 

 volumes (clean, unbound) of Science-Gossip. — Alfred Lockyer, 

 Tavistock Road, Snaresbrook, Essex. 



Desiderata — Good foreign land shells, varieties of British 

 land shells, principally albida, or British land and fresh-water 

 shells: — Limnceus Burnetti, ditto var. lacustris, L. involuta, 

 S. oblonga, Vertigo pusilla, V. substriata, V. alpestris, V. 

 7itimttissitna, V. angustior ; many of these species taken by 

 self, and all can be well authenticated. — W. Sutton, Upper 

 Claremond, Newcastle-upon-Tyne. 



For six good specimens of Cyprcra Europtea (John o' Groat's 

 shells), send slide of sponge spicules, cocoliths or diatoms, to 

 James Smith, 94 Dundas Street, Glasgow. — A large lot of 

 C. Europcea on hand. 



For marine soundings from West Indies, send micro slide. 

 A few West Indian and Australian seaweeds, and zoophytes, 

 also New Zealand mosses, for other seaweeds, zoophytes 

 (British or foreign), or micro slides. — B. B. Scott, 24 Geldon 

 Street, Kensington, Liverpool. 



Wanted, Irish and Scotch plants, in exchange for 280, 33r, 

 332, 368, 579, 666, 1036, 1261, and many other southern plants. 

 Send lists to J. R. Neve, Market Place, Kingston-on-Thames. 



L. C, offered, 97, 130c, 114, 141, 177, 330, 627, 696, 698, 

 821, 841b, 923, 1069, 1158, 1490, 1508, 1596, Carex or?iithopoda, 

 Xanthium spinosum, and others, in exchange for n, 55, 68, 

 104, 173, 181, 195, 220, 258, 287, 295, 325, 326, 333, 381, 389, 

 622, 1276, 1278, &c. — Address, A. E. Lomax, 41 Church Road, 

 Tranmere, Birkenhead. 



Fine slides of platinocyanide of magnesium, for diatomaceous 

 earth, rich guano, or portions of good gatherings. — H. W., 10 

 Evering Villas, Clapton, E. 



Section of wood from ancient forest bed of the Thames 

 Valley, mounted in balsam, to exchange for other slides. List 

 to E. Lovett, Holly Mount, Croydon. 



Wanted, cocoons of Varna Mai, Attacus Atlas, and others ; 

 also Colorado potato beetle, Brazilian diamond beetle, or 

 tropical butterflies, in exchange for cocoons of Attacus Cecropia, 

 Cynthia Peruyi. — J. Bates, 10 Orchard Terrace, Welling- 

 borough. 



"London Catalogue" 7th edition, Nos. 12, 13, 13b, 14a, 

 14c, i4d, 15, 16, 17, 1 8c, i8d, 20,23, 25, 1033, 1035, 1175, "78, 

 1186, 1 1 88a to nS8i, 1197, 1220, 1226, 1233, 1246, 1654, 1657, 

 and many species of Chara, wanted in exchange for other British 

 plants. — J. A. Wheldon, 26 Albion Street, Darlington. 



Wanted, fleas from bat, squirrel, and mouse; liberal exchange 

 in first-class mounted slides. Communicate before sending. — 

 E. Wheeler, 48 Tollington Road, Holloway, N. 



Wanted, good trilobites, or a set of mesozoic fossils, for 

 Huxley's "Physiography," Ramsay's "Physical Geology and 

 Geography of Great Britain," Dr. Page's " Chips and Chapters 

 for Geologists," and ten of Macmillan's " Science Primers " 

 (the whole are new) ; or send list of any fossils in exchange for 

 books. — Stuart M. Birnie, Milton at Campsie, Glasgow. 



BOOKS, ETC., RECEIVED, 



"Erasmus Darwin." By E. Krause. Translated by W. S. 

 Dallas. London : John Murray. 



"The Great Frozen Sea." By Captain Markham, R.N. 

 Fourth edition. London : C. Kegan Paul & Co. 



"Dramatic Notes, an Illustrated Handbook of the London 

 Theatres, 1879." By C. E. Pascoe. Price is. London ; 

 D. Bogue. 



"Transactions of the Cumberland Association." Part iv. 

 1878-79. Edited by the Rev. J. Clifton Ward, F.G.S. Carlisle : 

 C. & T. Coward. 



" British Dogs." By Hugh Dalziel. Five parts. London : 

 " The Country " office. 



"The Practical Fisherman." London: "The Bazaar" 

 Office. 



" Land and Water." December. 



"Ben Brierley's Journal." December. 



" Journal of Applied Science." December. 



" Animal World." December. 



" Midland Naturalist." December. 



"American Naturalist." November. 



"Journal of Forestry." November. 



" Journal of Quekett Microscopical Club." November. 

 &c. &c. &C. 



Communications received up to ioth ult. from: — 

 T. S.— T. B. W.-J. F.— G. C. D.— K. F. L.— T. R.— S. D. B. 

 —P. M. K.— H. P.— H. G.— J. S. H.— A. H. H.-V. S. L.— 

 J. M.— S. M. H.-J. D.-J. R. S. C— D. S.— T. B. L.— Dr. 

 Jr. T. J. L.— G. E. M.— E. C. T.-G. S. T.— H. B.— G.-L.— 

 W. J.— F. W. E. S.— J. C. M.— F. S. C— S. T.— E. S.— 

 W. K.— J. F. R.— J. R. N.— A. M.— J. E. K— I. C. T.— 

 G. B.— A. E. L.-R. W. C.-J. S.-W. B. R.-J. A. O.— 

 B. H.— S. W.-M. L.— N. P.— G. B.— W. D.-B. B. S.-J. S. 

 -P. Mc K.-G. C— W. S.-A. S.-T. N.— G. H. B.-W. G. 

 T. F. U.— A. L.— F. H. L — W. W.— J. S.— E. W— Col. H.— 

 M. W. N.— J. B.— J. A. W.— S. M. B.— H. C. C— W. K — 

 G. W. C.-&C. 



