144 



HA RD WICKE ' S SCIENCE-GOSSIP. 



fields and groves is not a creature to which we are in 

 the habit of attributing any interesting qualities. It 

 is, to say the truth, a mischievous and blatant bird : 

 and its screeching flocks can only be tolerated in the 

 belief that they may serve to keep a check on some 

 other nuisance in the scheme of Nature which other- 

 wise would become still more formidable. Yet here 

 was a member of the species that suddenly and 

 without any advantages of education developed all 

 sorts of high qualities — affection, gratitude, retentive 

 memory, considerable powers of reasoning — far 

 beyond the scope of most birds that have been reared 

 in cages from their youth up. And what distinguishes 

 the case of this bird from theirs was her capacity of 

 living a double existence, taking to the woods with 

 her wild friends and relatives for months at a time 

 during the nesting season, and faithfully returning for 

 the rest of the year to her owner's roof. The cleverest 

 feats of the domestic talking parrot or crested cockatoo 

 are on a low level compared to the intelligence of 

 this unsophisticated bird. Was this a Bacon or 

 Socrates among green parrots, or is it that that noisy 

 race are capable of higher things than we are accus- 

 tomed to suppose ? — From the " Pioneer Mail" 

 Allahabad. 



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 arc 

 fair exchanges. But it is evident that, when their offers are 

 simply Disguised Advertisements, forthe purpose 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 to be 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. 



W. J. Paul. — For the management of your aquarium, see 

 Taylor's book on "The Aquarium," published by Chatto & 

 Windus, 214 Piccadilly, where you will find the information 

 you desire. 



Mr. T. S. A. Cockerell has changed his address from 

 Kingston, Jamaica, to Las Cruces, New Mexico, U.S.A. 



EXCHANGES. 



British shells : P. similis, C. minutum, T. helicinus, R. 

 cancellata, R. striata, R. punctura, S. planorbis, T. testu- 

 dinalis, L. divaricata, L. pallidula, and others. Wanted in 

 return : D. rottmdata, G. fragilis, S. antiquatus, M. Bing- 

 liami, G. dubia, C. l&vis, O. patula, rare varieties of land and 

 freshwater shells, crustaceans, echinodermata, etc., not in 

 collection.— James Simpson, 6 North St. Andrew Street, 

 Aberdeen. 



Small collection of British birds' eggs and nests, offered in 

 exchange for foreign shells. — C. Hinscliff, 5 Mount Preston, 

 Leeds. 



Wanted, fertile specimens of any Lyccpodiuiu sclaginclla 

 and Pillularia globuli/era. Well-mounted botanical sections 

 in exchange. — P. Vancesmith, Escobeck, Bath. 



Can offer Anaplognatlms viridi, A. porosus, and A. analis } 

 all from New South Wales, for other coleoptera, British or 

 exotic. — John M. Whitehead, 65 Albert Place, Galashiels, N.K. 



Have large number of named mineral, ore, and fossil dupli- 



cates. Will exchange for other types not in my collection. 

 Send lists or particulars. — Chas. Wardingley, Littleborough, 

 Manchester. 



Wanted, a few correspondents interested in the rotifera to. 

 exchange bottles of water from their various localities. 

 Offered, the doubtful cecistes, Meluerta ringens. Wanted, 

 M. C07iifera, Asplanchnadice Jloscularidce (except ornata and 

 cornuta), etc. — Ernest H. Tugwell, 6 Lewisham Road, Green- 

 wich. 



Offered, standard books on zoology, philosophy, chemistry, 

 physics, mathematics, and general science : also a quantity of 

 chemical apparatus. — Roberts, 22 Carlingford Road, Totten- 

 ham. 



Wanted, Cook's " Freshwater Algae," and Gosse's " Tenby." 

 Address — Sebright House, Tettenhall Wood, Wolverhampton. 



For exchange, Pupa Jilosa, P. Australis, P. cxigua, 

 Vitritta limpida, V. pellucida, V. ?iivalis, Prosepeas acutis- 

 simus, Stenogyra angttstior, Helix tais, H. Jiarpa, H. gra- 

 cilicosta, H. excentrica, H. denti/erus, H. nitella, Cleopatra 

 moniliata, Helicina picta, Pupina artata, P. Blaufordi, etc. 

 Wanted, exotic land shells. — Miss Lister, Arragon Close, 

 Twickenham. 



Offered, P. vivipara, type and var. unicolor ; P. contecta, 

 A. anatina, P. comeus. Desiderata numerous. — C. Coles, 

 61 Barrington Road, Brixton, S.W. 



Wanted, foreign land shells ; will give foreign rhopalocera 

 in exchange. — Col. Parry, 18 Hyde Gardens, Eastbourne. 



Wanted, Geikie's "Text-Book," Lyell's "Principles of 

 Geology," Tate and Blake's " Yorkshire Lias," Phillips' 

 " Geology of Yorkshire," and " Mountains, Rivers, and Sea- 

 Coast of Yorkshire," in exchange for Talmer hand-camera, 

 new, cost 3/. io*. — J. H. Lofthouse, 42 Mayfield Grove, 

 Hai rogate. 



Wanted, young healthy and tame dormice, in exchange 

 for foreign stamps, splendid copies ; lists sent. What offers ''. — 

 Mr. A. E. Arnot, 12 Elmswood road, Seacombe, Cheshire. 



Offered, minerals, books on entomology, botany, geology, 

 etc. Wanted, pure Ligurian bees, and apiary appliances. — 

 G. Barker, 24 Avenue Villas, Child's Hill, Middlesex. 



Wanted, Wolle's " Freshwater Algse of the United States," 

 2 vols., pub. 1887. — F. R. Brokenshire, 24 Oxford Terrace, 

 Exeter. 



To exchange, eggs of roseate, sooty and noddy terns, 

 Bartram's sandpiper, laughing gull, and others. Many varie- 

 ties wanted. Send lists to — W. Wells Bhden, Stone, Staff. 



Wanted Avicula cygnipes from the Lias, or Unio valdensvs 

 from lower cretaceous. I will give half-a-dozen good perfect 

 fossils from the carboniferous, or from any other formation, for 

 a good specimen of the above. I have also the following good 

 specimens for exchange: ventriculite, Ostrea Marshi, Tere- 

 bratula gtobata, Calmene Blumenbachi, Nucula haine?ieri % 

 Oldluxmia atitiqua, Productus Burliugtonensis, Gryphce di- 

 lata t Holectypus depressus (urchin), pecten (Lias). — P. J. 

 Roberts, 11 Back Ash Street, Bacup. 



Micro, slides: louse of fowl, head-louse, sheeptick, 

 cuticle of onion, T.-sect. orange-peel — id. each, 3-r. the five. — 

 C. W. Maw, Bradford, Yorks. 



Lepidopterous and other insects, with a few land shells, 

 personally collected in Sierra Leone, to exchange for foreign 

 lepidoptera and coleoptera. — Dr. Clements, Frindsbury, 

 Rochester. 



Wanted, purchase or exchange, any species of land and 

 freshwater shells, and books and pamphlets on the subject ; 

 or small collection of specimens, if cheap. — H. S. Wallace, Art 

 Gallery, Newcastle-on-Tyne. 



BOOKS, ETC., RECEIVED FOR NOTICE. 



" The Food of Plants," by A. P. Laurie (London : Mac- 

 millan & Co.). — Essex County Council Technical Instruction 

 Committee, "Report and Handbook" (London: Hayman, 

 Christy, & Lilly). — "Trinidad Field-Naturalists' Club" 

 ("Mirror" Office, Port-of-Spain).— " The Teeth of Pauper 

 Children," by Richard^Denison Pedley, F.R.C.S., L.U.S. 

 (London : J. P. Segg & Co.). — " The Iron Ore of Great Britain 

 and Ireland," by J. D. Kendall (Crosby, Lockwood & Co.). — 

 "Physiology of Vertebrata," by A. B. Griffiths (London: 

 L. Reeve & Co.). — "The Nests and Eggs of British Birds," 

 by Charles Dison (London : Chapman & Hall). — " The Micro- 

 scope" (The Microscopical Publishing Co.). — "The American 

 Monthly Microscopical Journal" (C. W. Smiley, Washington). 

 — "The Entomologist" (London: West, Newman & Co.). — 

 " The .Midland Naturalist" (London: Simpkin, Marshall & 

 Co.). — "The Essex Naturalist" (Chelmsford: E. Durrant & 

 Co.). — "The American Naturalist " (Philadelphia : Binder & 

 Kelly), etc., etc. 



Communications received up to the ioth ult. from : 

 J. M. W.— W. W.— W. G. C— C. H.— F. R. B.— P. V.— W. 

 W. B.— J. R. H.— H. E. G.— E. H. T.— C. W. — R.— J. S.— 

 Miss L. — G. I. P.— G. B.— P. J. R.— A. E. A.— J. H. S.— W. 

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

 C— W. H. B.— Mrs. C— J. H. W.— A. D. — etc., etc. 



