HARDWICKE'S SCIENCE-GOSSIP. 



239 



for tlie probabilities of the case. Assuming that the 

 name should be spelt hare bell and applied to 

 Hyacinth us non-scriptiis, it may be remarked that the 

 latter is not a campanula, or bell-flower at all, though 

 often called "blue-bell." If to this it be replied that 

 our wild-flowers received their popular names first, and 

 their botanical classification afterwards, it should also 

 be borne in mind that to apply the name in question 

 to UyaciutJnis non-scriptTis would leave the genuine 

 little bell-flower (rotundifolia) in the anomalous 

 position of having no popular name, excepting per- 

 haps that of heath-bell which is sometimes applied to 

 it. On the other hand if we assume that the name 

 should be spelt hair bell and apply it to Campanula 

 roliindifolia, we at once satisfy the demands of 

 botanical accuracy and of the fitness of things, for 

 the application of hair bell to the slender, fragile 

 little flower which adorns our heaths and dry pastures, 

 is as singularly appropriate as it is the reverse if 

 applied to the stout, succulent vvild-hyaciuth. — 

 A. Kingston, Royston, Herts. 



Fluke or Liver-plaice [Distoma hepatica or 

 Fasciola hepatica). — Can any of the readers of Science- 

 Gossip tell me the scientific name of the embryo of 

 the fluke ? In the spring of 1880, all the water-snails 

 (Li?nn(m stagnalis) which 'i\'ere brought from the 

 river for my aquarium had their heads covered with 

 fluke in a certain stage of development, but those 

 brought me this spring, 1881, and I had several lots, 

 were entirely free. I can only account for this by 

 this spring being particularly dry, whereas that of 

 last year was quite the reverse, for we had water 

 more or less out in the marshes between Canterbury 

 and Grove Ferry as late as the end of June. Any 

 information respecting the fluke will be acceptable to 

 myself and many others. — Clai-a Kingsford. 



NOTICES TO CORRESPONDENTS. 



To CORKESPONDENTS AND EXCHANGERS. — As We nOW 



publish Science-Gossip earlier than heretofore, we cannot 

 possibly insert in the following number any communications 

 which reach us later than the 8th 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 oi owt gratuitous insertion of 

 "exchanges" which cannot be tolerated. 



B. E. Dawson (Brixton).— The best book is Sowerb/s 

 " British Grasses," with coloured plates of every species, pub- 

 lished at one guinea. Apply to D. Bogue, 3 St. Martin's Place, 

 Trafalgar Square, London. 



A. CoRLETT.— The leaves of !the oak-trees ^-ou mention were 

 no doubt attacked by the larvEE of To>-trix viridana. 



A. W. Patching. — The insects were a species of gnat. 



T. McGann (Gortaclare).— Many thanks for the slides, which 

 we consider are excellent examples of mounting. 



B. W. Ward. — The object you gave us a rough sketch of 

 is very common in fresh water. It is a species of Nais. 



G. Roberts. — Please send us other specimens of the plants. 

 The former were mislaid. 



T. Pearson.— Landsborough's "British Seaweeds" (with 

 coloured plates) is a capital book for a beginner. A good work 

 on the same subject is published at the " Bazaar " newspaper 

 office, written by Mr. W. H. Grattan. See paper by this 

 latter gentleman in " Collecting and Preserving Natural History 

 Objects," published by D. Bogue, at 3^-. 6(/. 



A. G. Davidson. — Your box was smashed when it reached 

 us, and not a trace of a shell was visible. 



W. Ratclii^fe. — We have no doubt whatever from your 

 sketch that your large moth is the meadow tiger (Ai-ctia caja). 

 The eggs on the herring were very probably those of some 

 crustacean paraiite. 



H. C. Brook. — Accept our best thanks. Send us the hairs 

 for mounting ; also write out a full description of the fro?, 

 and the glowworm for insertion. " 



J. Temi'ere.— Apply to INIr. W. Shrubsole, F.G.S., Sheerness- 

 on-Sea. 



N. T.— The small fragment of carboniferous limestone con- 

 tained a fossil coral called Lithostiotion jiinccum. 



W. B. Mason (Bolton).— The insects enclosed in a small 

 bottle, and which were found in a garden after a heavy shower 

 of rain, belong to order Thysanurida;, and are called Achonites 

 purp7irasccns. See Science-Gossip for January 1873, for figures 

 and description of the same. 



W. S.— A description of Faure's battery was given in 

 "Nature," and also, we believe, in the " English Mechanic." 



A. Waller.— We shall be very pleased indeed to have your 

 notes on botanical folk-lore. 



D. Douglas. — Accept our best thanks for your beautifully 

 mounted specimens of male Anacharis, which reached us quite 

 safely. 



J. Wilson. — Your plant is a Lycium harhatnm, and it belongs 

 to the Solanacese. It is very common in the hedges and about 

 cottages in the eastern counties, and generally goes by the 

 name of the tea-tree. It is a native of Asia Minor, hence 

 generic name. 



lence its 



EXCHANGES. 



SiiVERAL slides of diatoms (fresh and salt water) offered for 

 other diatoms, foraminifera, or spicula, or entomological or 

 botanical desiderata.— G. H. Bryan, Trumpington Road, 

 Cambridge. 



Wanted, 23, 194, 1042, and others, for ii32,'i2i2, or other 

 rare plants. Lists exchanged.— C. A. 0., Lyndhurst Cottage, 

 Lyndhurst Road, Worthing, Sussex. 



For a second-hand bicycle, 54 or higher, or tricycle, thirty- 

 four volumes on geology, &c., also sixty fossils and character- 

 istic rocks (.bloodstone, Iceland spar, &c.), Harting's "Subter- 

 ranean World," " Pupular Recreator," "Transformations of 

 Insects," "Advanced Text Book of Geology," "Geological 

 Terms," &c., to the value of £,\\ %s. List on application. — 

 F. S. Atkinson, Thornbury House, White Cross Road, Hereford. 

 Will send six nicely-mounted palates (various) for a bulb of 

 crown-on-crown imperial lily, which bears two tiers of bells. 

 Write first to J. Turner, Davenport, Stockport. 



Exchange Reade's " Diatom Prism," large st.age forcep?, 

 do. mineral holder, stage condenser, micrometer j J,; inch in brass- 

 cell, \ English objective, wide angle with collar adjustment, for 

 first-class microscope slides, or offers. — J. L. Mitchell, 6 Mans- 

 field Place, Edinburgh. 



Pressed specimens of Pclta-a aiidromcdcrfolia, P. ornithc- 

 pus, Gyninogra7)inie triangntaiis, from the Santa Cri,z 

 Mountains, in exchange for Biiiiah ferns, shells, or 01 her 

 curiosities.— J. E. Reed, Wrights, Santa Clasa Co., Californ a. 

 Stained leaves, botanical, anatomical sections, echinode;- 

 mata, wings exotic lepidoptera, micro fungi, and all classes of 

 microscopic objects. — Fred. R. Martin, Clevedon. 



Wanted, volumes of "Notes and Queries," "Descent of 

 Man," "Origin of Species," or other of I\Ir. Darwin's works; 

 also Yarrell's or Macgillivray's " Lritish Birds," Sir Juhn 

 Lubbock's work on "Fertilization," Wilson's "Synopsis of 

 British Plants," and Hudson's "Flora Anglica." Other books, 

 or well-mounted botanical specimens in exchange. — Jno. Watson, 

 Institution, Old Trafford, Manchester. 



A NUMBEi; of micro slides, marine algae, principally with 

 parasitic diatoms in situ, beautifully mounted in balsam, illus- 

 trating many species ; also a vaiied and interesting collection 

 of prepared material, mostly marine, as well as some fine 

 M. alg3e on paper. Will exchange for photo apparatus, lantern 

 and micro slides, if very good, or cash, &c. — T. IMcGann, 

 Burren, co. Clare. 



Wanted in exchange for Gentiana p?teu?nonanihe, Sci/ta 

 aiitnuifiatis and E^-iicastrmn polyctiii (a newly-discovered 

 plant at Saffron Walden, Essex), any good offers of British 

 plants or lepidoptera. — C. E. Stansfield, 20 Bootham, York. 



Zoiiites algiriis, Bnliiiiiis decollates. Helix candidissiina, 

 H. vermiculata, and a few other shells, also some good butter- 

 flies. Wanted good lepidoptera. — T. C. Hedley, 3 Hyde 

 Gardens, Eastbourne. 



Wanted, fresh roots of Polygomcin Bistort t, Corallorrhizct- 

 innata, Petaj-goniiuiz l7-iste and Cyclamen Eiiropaiiuz f r 

 herbarium. Cash or exchange. S. B. Axford, 15 Commercial 

 Road, Bournemouth. 



Pakasites prepared ready for mounting. The tick of sheep, 

 horse, and dog, also fluke from sheep, one of each sent for a 

 good mounted slide. — Alfred Tozer, Jackson's Row, ]Man- 

 chester. 



Wanted specimens lin spirits preferred) of myriapods from 

 any locality. — T. Carmichael, Castlecraig, Dolphinton, N.B. 



Wanted to exchange Scienxe-Gossii' 1876, 1877, 18-8, un- 

 bound, "The Collectors' Handy-book," by Johann Nave, and 

 "Selection of Eatable Funguses of Great Britain," by Hogg, 

 for " The Variation of Animals and Plants under Domesti- 

 cation," by Darwia. — Thomas Hebden, Hainworth, near 

 Keighley. 



