2l6 



HARDWICKE'S SCIENCE-GOSSIP. 



NOTICES TO CORRESPONDENTS. 



To Correspondents and Exchangers. — As we now 

 publish Science-Gossip a week earlier than heretofore, we 

 cannot possibly insert in the following number any communi- 

 cations which reach us later than the 9th of the previous 

 month. 



To Anonymous Querists. — We receive so many queries 

 which do not bear the writers' names that we are forced to 

 adhere to our rule of not noticing them. 



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, for the purpose of evading the cost of 

 advertising, an advantage is taken of our gratuitous insertion of 

 "exchanges" which cannot be tolerated. 



H. H. (W. Ashling). — Your mint is a form of M. arvensis ; 

 it approaches M. agrestis very closely. The other is Cala- 

 mintha sylvatica, it is too diffuse for C. mcnthifolia. 



M. M. C. C. S. (Somerset). — The specimen you enclose is 

 the snowberry (Symphoria racemosa), a North American 

 shrub, not uncommon in cottage gardens. We have no doubt 

 whatever it is the plant called snowdrop tree by your Welsh 

 correspondent ; we have heard it named snowball, snowdrop, 

 and snowberry. 



J. G. G. (Chipperfield). — We have done our best by micro- 

 scopical examination, to find out the cause of the discoloration ; 

 the cells are devoid of chlorophyll, still the leaf is uninjured, 

 and has evidently not suffered either from insect or fungoid 

 growth. 



C. Vance Smith. — You can get living marine zoophytes, &c, 

 from Mr. T. McGann, Gortaclare, Burren, Ireland ; and weekly 

 supplies of living microscopical animals from the excellent studio 

 of Mr. Thomas Bolton, 17 Ann Street, Birmingham. Many 

 thanks for your beautiful slides. 



John Platt (Nantwich). — We have received the shell you 

 say was one of several which came from a girl's ear. It is the 

 upper part of an empty clansilia—a. common shell on hedge- 

 banks and moss. The girl must have been lying on the grass, or 

 else have put the shells in her ear, as children often do put such 

 things. It is utterly impossible the shells could have lived in the 

 girl's head, and they certainly had not been in her ears long 

 before they came out. 



E. D. Bayley. — Thanks for your specimen of rose in which 

 two buds are growing together by their calyces. 



J. A. W. — Lindsay's " British Lichens," publi^-hed by Rout- 

 ledge, at 7s. 6d., with coloured plates, is a good introductory 

 book. 



W. Purves (Callander). — See articles on "The Preparation 

 of Insects for Microscopical Examination," in Science-Gossip 

 for May and June of the present year. Also chapter in " Collect- 

 ing and Preserving Natural History Objects," published by 

 D. Bogue, 3 St. Martin's Square, London, price y 6d. 



R. A. Buller. — The "crystalline cases" attached to sea- 

 weeds, are the egg-cases of some mollusc, perhaps of a species 

 of Natica. The " growth " attached to underside of walnut leaf 

 are the stalked eggs of some insect. In many respects they 

 resemble those of the lace-wing. 



H. H. Browne. — We have not as yet received any box con- 

 taining the wild flower you mention. 



W. K. (Leeds). — We sent off your specimens to a gentleman to 

 be named, and he has unfortunately mislaid them. Please send 

 us others. 



J. W. Wilson. — You will find details of the genus acarus, in 

 Boisduval's "L'Entomologie Horticole," also a good synopsis 

 in the " Micrographic Dictionary." Westwood's " Entomologist's 

 Text-Book," will supply you with details of the genus Atropos. 

 S. Boxford. — See note on "Reptile Vivaria" in Science- 

 Gossip for 1878, page 38 ; also details as to reptiles in confine- 

 ment, in Science-Gossip, vol. iv. page 272. A description of 

 a " Reptile Vivarium " is contained in Science-Gossip for 1876, 

 page 266. 



EXCHANGES. 



Wanted, a little sand or dredgings containing globigerina. 

 A liberal exchange in double-stained vegetable tissues in return. 

 —Charles Vance Smith, Carmarthen. 



Wanted, well-mounted slides (dry) of all the Pleurosigmata, 

 in exchange for physiological and others. Lists to M. Fowler, 

 Burn Row, Slamannan, JN.B. 



A good triple nosepiece and a pair of stage forceps, in ex- 

 change for a really good one inch and a fair quarter inch 

 objective.— T. S. Harrison, The Laboratory, 31 Scale Lane, 

 Hull. m 



For" mounted slides of Podura cnrvicollis or Degeiria ; 

 send other slides of interest. — T. Forty, Buckingham. 



Three and a half volumes of the "Intellectual Observer," 



unbound, and all the Lepidoptera I take this year for fossils or 

 books. — J. A. Floyd, Alcester, Warwickshire. 



Wanted, microscopic apparatus or books, for a complete set 

 of " Grevillea." — C. Weeks, Torquay. 



Teeth, cartilage, &c. (unmounted), from Slamannan coal 

 measures, make good slides, showing structure, for other un- 

 mounted material. Send lists to M. Fowler, Burn Row, 

 Slamannan, N.B. 



Land and fresh-water shells, taken in Yorkshire for those of 

 other counties. Address, H. Pollard, Philosophical Hall, Leeds. 



FiNEspecimensof Batis, Derasa, Diluta, Hepatica, Brunnea, 

 Nebulosa, Ziczac, Jota, Albicillata, and others. Wanted good 

 British eggs, or marine shells. — Thomas H. Hedworth, Dunston, 

 Gateshead. 



Silurian corals and brachiopods, good specimens named and 

 unnamed, in exchange for other fossils. — F. Ashton, 46 Lingard 

 Street, Moss Side, Manchester. 



Wanted, the "Gamekeeper at Home," by the author of 

 " Wild Life in a Southern County," in exchange for Hayward's 

 " Botanist's Pocket-book." — Indus Villa, Livingstone Road, 

 Havelock Park, Southsea, Hants. 



Slides of Phthirius pubis (human crab louse), in exchange 

 for other parasites. Send lists to A. W. Stokes, Laboratory, 

 Guy's Hospital, S.E. 



Wanted, 46, 103, 119, 170b, 511, 559b, 678b, 730, 757c, 828, 

 933, 992b, 1057b, 1081, 1139b, 1222, 1227b, 1228, 1266, 1279, 

 1286, 1298, 1347, 1410, 1457. 1582b, 1669, 1670, 1671, 1673, 1674, 

 and 1678, for Potamogeton Zizii, m and K. — Andrew Brotherston, 

 Shedden Park Road, Kelso, N.B. 



Larv.e of Bucephala, Filipendula, Salicis, and Chrysorrhoea, 

 also British plants for larvae andpupee. — Tunley, 7 Albert Road, 

 Southsea. 



Wanted, Kentish books, deeds, and guides — or rubbings of 

 monumental brasses, from any county. Exchange natural 

 objects, fossils, ferns, seaweeds, &c. — F. Stanley, Margate. 



" Nature," complete, 19 volumes, beautifully half-bound, 

 rest of numbers up to date, in exchange for binocular microscope. 

 Address, Alfred Tozer, Jackson Row, Manchester. 



Wanted, for a consideration, live reptiles, British or Foreign. 

 — J. M. Campbell, Kelvin Grove Park, Glasgow. 



Fine collection of well-preserved U. S. plants, about 1000 

 species, including grasses and ferns. Wanted, works on 

 Entomology, botany (specially cryptogamic), or offers. — Address, 

 care of Editor. 



Wanted, good micro material, prepared or in the rough — 

 Foraminifera, Polycystina, Spicula, Diatoms, E. spines, &c, for 

 first-class slides. — James Green, the Cross, March. 



Hornets and Wasps (living ones preferred) wanted in ex- 

 change for first-rate insect preparations. Please write, before 

 sending any insects, to E. S., 24 Grummant Road, Peckham, S.E. 



S. lacustke, P. nitidum, P. pusillum, N. Jiuviatilis, L. 

 glabra, P. involuius, L. invohrfus, and other shells, in exchange 

 for numerous desiderata. — Henry Laver, F. L.S., 1 Trinity 

 Street, Colchester. 



BOOKS, ETC., RECEIVED. 



"Smithsonian Report, 1877." Washington: Government 

 Printing Office. 



"Wild Flowers worth Notice" (new edition). By Mrs. Lan- 

 kester. London : D. Bogue. 



" Manual of Bee Keeping." By John Hunter (3rd edition). 

 London : D. Bogue. 



" Greenhouse Favourites." Part iii. London : Groombridge. 



"Proceedings of Liverpool Naturalists' Field Club, 1878-9." 



"Journal of Quekett Microscopical Club." No. 40. London: 

 D. Bogue. 



"Midland Naturalist." August. 



"Land and Water." 



" Ben Brierley's Journal." 



"Journal of Applied Science." 



" Feuille des Jeunes Naturalisbes." 



" Science News." July, August. 



"American Quarterly Microscopical Journal." No. iv. 



" American Naturalist." August. 



" Bulletin of the Essex Institution." Vol. ii. nos. 4, 5, 6. 



" Bulletin de la Societe Beige de Microscopic" No. ix. 



"Annual Report of the Goole Scientific Society, for 1878-9." 

 &c. &c. &c. 



Communications received up to ioth ult. from :— 

 J. F. R.— J. S.— T. F.— B. H— G. N.— D. K. B.— C. W.— 

 T. V. D— F. V. P.— J. W. S.— W. W. I.— S. B.— H. W. F.— 

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

 C. F. W. T. W.— J. S. H— C. V. S.— G. H.— C B.-J. P.— 

 J. H. W.— A. W.— W. J.— C. H. D.-W. M. P.— E. D. B.— 

 R. H. W.— F. A.— W. W.— H. P.— C. B. M.— T. H. H — 

 R. A. B.— W. A. K.— M. F.— A. W. S.— E. G. H.— J. F.— 

 A. B.— S. M.— B. H.— J. A. W.— H. B.— E. S.— D. H.— 

 S. B.— R. T.— W. P.— F. S.— W. S.— F. C. K.— W. E. G.— 

 W. H. T.— J. M. C— J. S. H.— H. B.— B. B. S.— G. H.— 

 M. H. R.— C. D. S.— J. T. M.— T. H. A.— A. P.-A. T.— 

 W. H. N.— &c. 



