HAREWICKE'S SCIENCE-GOSSIP. 



283 



E. Wagstaff. — Your " excrescences " on back of oak-leaf 

 are " oak-spangle galls," formed by an insect. See " Half 

 Hours in the Green Lanes," page 197, for figures and descrip- 

 tions of the same. 



W. D. — You cannot do better than procure the sixpenny- 

 monthly parts (now issuing) of Kirby's " European Butterflies 

 and Moths." For tropical insects get Drury's " Exotic Entom- 

 ology" (3 vols.), or Westwood's "Oriental Entomology." Per- 

 haps Mr. J. G. Wood's "Insects Abroad" would answer your 

 purpose. 



G. H. Guest. — The two birds are quite different. The orni- 

 thological name of the crow is Corz'us corona; that of the rook, 

 Corvus frngilegus. 



L. M. B. — Some of your objects found in pond water are 

 species of diatoms, but we cannot tell which from the drawings 

 sent. The moving object was some species of Amoeba. No. 1 

 appears to consist of Cocconema and No. 2 of Pinnularia. 



G. C. Churchill. — We are considering your valuable sug- 

 gestion as to placing the member- of the Science-Gossip 

 Botanical Exchange Club with the Silesian Botanical Exchange 

 Club. 



B. J. W. — Your tank is evidently full of Oscillatoria judging 

 from your rough sketch. We know of no plan for getting rid of 

 them except cleaning out the vessel. 



W. E. (Brighton). — Your excellently mounted specimens were 

 as follows : No. 1, Geutiana campestris (L.) ; No. 2, Phyteunta 

 orbiculare (L.) ; No. 3, Jasione Montana ; No. 4, Scobiosa 

 columbaria [L.) You will find them fully described, under the 

 above names, in Babington's " Botany." 



R. H. (Queenstown). — It is a species of Maurandia, probably 

 .'/. antirrhiniflora, a Mexican plant. 



H. Berney. — We are sorry to be obliged to pass over your 

 question. Put it to the editor of the "Antiquary." We only 

 deal with natural history subjects, not with coins. 



R. Verrill. — The "American Monthly Microscopical 

 Journal" is published by Thompson & Moreau, New York; 

 price 5s. per annum for Great Britain. The address of the 

 "American Journal of Microscopy" is P. O. Box, 2852, New 

 York. The subscription is one dollar a year. 



Hugh Richardson.— The fern is Polystkhum aculeatitm. 

 The cluster of little ferns show that it is a proliferous variety. 



J. H. Henderson. — Your variety of Blechnum spicant is 

 termed m?iltijidu?n. It is not of common occurrence. 



R. W. Brierlev.— You had better consult the Curator of the 

 Sheffield Museum as to your collection of shells. 



John Lambert.— Thanks for the slide. Your note on 

 Trichodectes subrostratus stands over to our next number. 



G. F. L. — We only know of the Geologists' Association (which 

 holds its meetings at University College, Gower Street). This 

 useful society has excursions to various places of geological note 

 near London, and others of longer duration to localities further 

 afield. Write to the hon. sec. 



A. G. Wright (Newmarket). — Your specimen No. 1 is too 

 small to decide what it really is. No. 2 is a pebble of Mica 

 schist. Write to the authorities of the Geological Dept., British 

 Museum, about your bones ; and to the secretary of the Numis- 

 matical Society about your Roman coins. 



C F. — Dr. Cooke's " Fern-book for Everybody," published 

 by Warne & Co., price is., is one of the best popular works we 

 know on this subject. Smith's " Ferns, British and Foreign," 

 price ys. 6d., published by D. Bogue, 3 St. Martin's Place, 

 Trafalgar Square, is lull of illustrations, and is the completest 

 work of its kind yet issued. 



.W. H. G. would feel obliged if some correspondent would let 

 him know if there is any published account (and where) of the 

 Land and Freshwater Mollusca of the County of Middlesex. 



W. Penn. — Your specimens are the leaves of the Wood 

 Betony {Stachys Betonica, Sm.). 



T. B. — Thanks for your valuable hint. 



J. Sinel. — Your Coralline is Sertidaria operculata. The 

 " little ovate bodies " on it are reproductive capsules. 



J. J. Morgan.— Your specimen tube of gutta percha (with 

 contents) arrived safely. Accept our thanks for it. Your note 

 was too late for insertion this month. 



EXCHANGES. 



Side-blown eggs of grasshopper, warbler, sedge warbler, 

 curlew, O. catcher, redshank, dunlin, lesser tern, Arctic tern, 

 wild duck, &c, for other side-blown eggs. Unaccepted offers 

 not answered.— Tom Duckworth, 58 Scotch Street, Carlisle. 



Wanted to exchange Barbadoes chalk from Cambridge Estate 

 for any of the following plants : Erica cinerea, E. mediterranea, 

 E. vagans, E. tetralix, E. ciliaris, Orchis morio, Aceras 

 anthropophara, Oplirys aranifera, O. musci/era.—R. B. Lind- 

 say, St. Ann's Terrace, Stamford Hill, N. 



Lepidoitera in exchange for larvae and living pu pas and pre- 

 served larvae. — W. K. Mann, Wellington Terrace, Clifton, Bristol. 



Twenty dd. numbers of Kirby's "European Butterflies and 

 Moths," Cassell, &c, in exchange for first-class slides ; also 

 two valuable old engravings, after R. Westall, R.A., size 28 X 2r, 

 exchange for best ground-edged slips. — E. Edwards, St. John's 

 Cottages, Penge, S>.E. 



Monocular microscope, by Harris & Sons, Museum Street, 

 three objectives \, \, J, condenser, living-box, &c, in handsome 

 mahogany case, cost £%■ Wanted geological specimens, espe- 

 cially bronze and flint implements. — Scott White, 99 Waterloo 

 Crescent, Nottingham. 



Duplicates : Paphia, sibylla, blandina, miniata, quadra, 

 vieliloti, bidentata, plumaria, blandiata, tristata, russata, 

 plagiata, perochracella, radintella, bicosiella. Desiderata : 

 British Lepir'optera, and Neuroptera. — Jas. J. King, 207 

 Sauchiehall Street, Glasgow. 



Mounted and unmounted micro-fungi, about twenty-five 

 varieties, and gorgonia spicules, for other fungi, picked d.iatoms, 

 or pure gatherings of them. — P. Z., Lilly Villa, Victoria Park, 

 Manchester. 



Crustacea. — Thiapolita, Lithodes arcticus, Axius, Polybius 

 Henslowiij and many others, prepared for the cabinet, ottered 

 for species not in collection, either prepared or in a fresh or 

 living state. Northern specimens more particularly desired, 

 and correspondence on this subject wanted. — John T. Carring- 

 ton, E.L.S., Royal Aquarium, Westminster, London, S.W. ; or, 

 E. Lovett, Holly Mount, Croydon. 



Wanted, one or two specimens of fossil Crustacea ; a good 

 exchange in fluid slides of ova, or in specimens of various kinds. 

 — E. Lovett, Holly Mount, Croydon. 



Wanted to exchange British birds' eggs, for others not in 

 collection : kestrel, razorbill, green plover, landrail, rook, 

 starling, blackbird, song-thrush, lesser white throat, and wren. 

 — R. Bell, 15 Dundee Street, Belfast. 



Polarising objects, crystals of the alkaloids, and others, beau- 

 tifully mounted, ground edge slips, blue and white rings, in ex- 

 change for other good mounted objects ; also microscopic fungi 

 wanted ; s lides given in exchange.— A. Smith, The Laboratory, 

 Essex Road, Islington, London. 



Offered.— Pisiditan pusillum, P.fontinale, and P.fo/itinale 

 var. cinerea. Also mounted or unmounted odontophures of 

 several species of land shells. Wanted, good named varieties 

 of British shells.— J. D. burterell, 2 St. John Street, Beverley. 



Collection of over 200 coins, including 40 old British and 

 Irish, and a few silver. Wanted, British birds' eggs, or offers. 

 ■ — R. McAldowie, 82 Bonaccord St., Aberdeen. 



A qiantii Y of British seaweed for exchange. What offers ? 

 —Edward Oliver, 46 Mildmay Grove, London, N. 



Some rare eggs side-blown, and otherwise, to exchange for 

 others not in collection. Also a splendid boar's tusk from the 

 red Crag. What offers in eggs, &c. ? Also a good achromatic 

 microscope 1 and 2-inch powers, live box, trough, &c, and 

 several accessories lor mounting, for eggs or cash. — Sidney E. 

 W. Duvall, 4 Butter Market, Ipswich, Suffolk. 



Wanted, a material cleansed of crustaceans, entomostraca, 

 mollusca, and hyme,;Optera, for mounting, in exchange for 

 snake skins"; purchase preferred to exchange. — T. 5. Morten, 

 40 Haverstock Hill, London, N.W. 



Wanted, an excellent student's microscope. Will gve in, 

 exchange first-class books (new) including Sowerby's " British 

 Wild Flowers" ,£3 is., Smiles' "Lives of Edward and Dick," 

 &c. Apply for particulars, with description and original cost of 

 instrument, to Frank O. Taylor, 5 Affleck Place, Aberdeen. 



Wanted, Science-Gossip Nos. 170, 171, 172, 173, 174, 175. 

 178, 179, or any of them, for Nos. 176. 177, 180, 181, 182, 183, 

 190. — B. Hobson, Tapton Elms, Sheffield. 



Twelve varieties of beautiful seeds (not the comm<n species 

 of the florists' shops) in exchange for interesting material or 

 slides.— M. Medhurst, 2a Dell Street, Holt Road, Liverpool. 



Eggs of cormorant, curlew, C. snipe, red grouse, king ousel, 

 &c, for other British birds' eggs. Some chipped flints, small 

 collection of land and freshwater shells. What offers ? — Jas. 

 Ingleby, Eaveston, Ripon. 



A large cylinder electrical machine for induction coil, or 

 anything useful. — F. Howorth, Rose Bank, Heaton Moor, 

 Stockport. 



Good shower-bath in exchange for valuable foreign shells, or 

 open to offers.— Miss F. Hele, Fairlight, Elmgrove Road, 

 Cotham, Bristol. 



Micro-chemical preparations: salicine, murexide, hippuric 

 acid, narcotine, brucia, and many others, to exchange ; all 

 beautiful polariscopic objects. Wanted fossils, minerals, or 

 other micro-slides (not botanical). — A. H. Scott-White, 99 

 Waterloo Crescent, Nottingham. 



Good binocular field glass, leather sling case, also cycloscope, 

 for micro apparatus, or b oks. — "Naturalist," W. Jones, 

 Grocer, Church Street, Welshpool. 



Duplicates— Machaon, galathea, edusa, semele, paniscus, 

 salicis, taminata. Exchange for this year's crataegi, sinapis, 

 hyale, betulae, pruni, sibylla, C. alfoim.— Alfred Jones, jun., 

 Cambridge. 



