120 



HARDWICKE'S SCIEN CE -GOS S IP. 



NOTICES TO CORRESPONDENTS. 



A. Shaw. — The bones sent are known as Otolites, or the 

 ear-bones of the Cod. You will find a detailed account of 

 their nature and economy in Cuvier's "Animal Kine:(lom," 

 vol. ii. p. 344. Their structure much resembles that of shells, 

 especially of some of the opercula. You may find them in 

 the ears of most fishes. 



Wm. Morlet. — The flower more nearly resembles Linaria 

 repens than L.pelesseriana ; but it is very difficult to identify 

 species from a single flower. The entire plant should be 

 sent. 



F. W. S. — Your fossil corals belong to the same species, 

 Lithostrotion irregular e, one of the most characteristic fossils 

 of the Carboniferous Limestone formation. 



J. [C. M.— Our thanks are due for tlie fine specimens of 

 Isoetes hystrix, which reached us in capital condition. 



A. L.— Your specimen was an undeveloped Jungermannia. 



W. L. N.— You had better write to the publishers, complain- 

 ing of the delay. We have already called attention to it, 

 and do not see what we can do further. 



D. H. — The Toothwort (Lathrea squamaria) is usually 

 parasitic ou roots, and we have never known it to occur 

 otherwise. We know the locality you mention (Marple 

 Wood), and should think it grows there over decaying roots. 



H. W. P. R.— The best way of fastening your plants down 

 is, we think, by strips of paper. See note on this subject in 

 last number of Gossip. You will find a full account of 

 how to preserve fungi in an article on " Collecting and 

 Preserving Fungi," by Mr. Worthington Smith, in the Sep- 

 tember number of Science-Gossip, 18/2. 



J. W. S. — A book on Marine Aquaria is much wanted. 

 You will find some information on the subject in the Guide 

 to the Crystal Palace Aquarium. You may get to know how 

 to make artificial sea- water in the instructions given with 

 the bags of sea-salt sold for baths, by any good chemist. 



C. L. A.— The monstrosity in the pistil of Dutch Hyacinth 

 sent us is what Dr. Masters has explained in his work on 

 " Vegetable Teratology," under the heading of/' Pistillody." 

 See chapter bearing this title. 



F. T. D.— Get Dr. Lankester's" Half- Hours with the Micro- 

 scope" (London: Hardwicke), and Davies on " Mounting " 

 (same publisher). These books are both cheap, and their 

 study will help you to all the information you require. 



T. F. — We are sorry we cannot help you to the information 

 you seek. We have applied to several microscopists, with 

 the same result. We wdl insert it as a query ne.xt month, 

 and see if it will bring a reply. 



M. J. G. — Will this correspondent, whose mosses were 

 mentioned in the February number, be good enough to com- 

 municate with us ? 



A Subscriber. — The bestthingyou could get for mounting 

 j'our shells on would be common millboard, about the 

 sixteenth of an inch thick. It is seldom kept in stock, but 

 any stationer would know what you mean, and get it for you. 

 Use the " Coaguline," or " Derby " cement, for fastening 

 the shells. It is semi-transparent, and doesn't show, and 

 the slightest drop is suflScient. This you may order through 

 any chemist. 



F. W.— The mosses sent are — 1. An Orthotrichum, not 

 determinable without ripe fruit; 2. Hypnam lutescens and 

 S. con/ertum ; 3. Pottia pusiUa ; and 4. Rhacomitrium lanii- 

 ginosum. — R. B. 



A. Smyth. — Your moths arrived so smashed that they 

 formed an entomolojfical puzzle ! We could only see by the 

 fragments they were all common species, but it was impos- 

 sible to assign them to the numbers. Hilbner's book is 

 very rare and expensive, but you may perhaps meet with it 

 in some great public library. Stephen's is more common, 

 and may be met with^in a similar place. Get Rev. J. C. Wood's 

 " Insects at Home," just published. 



J. M. D. AsHBiTRv. — Many thanks for the slides. That of 

 the nervous system of the Cockroach (Blatta) is excellent, and 

 ■worthy of the highest praise for the pains and skill displayed. 

 It is a valuable and interesting object, and we recommend 

 students to experiment on the internal structure of similar 

 objects. 



Rev. J. D. La T.— Your article is in type, but we have 

 been unwillingly obliged to defer it till our next issue. 



W. B.— Your specimen is the elongated Polysiphonia 

 {Polyaiphonia elongata), a not uncommon sea- weed. 



J. Crowe. — Not congealed water at all, although it is 

 commonly called so. The crystals are those of selenite,or 

 sulphate of lime ; common in the London clay. 



T. B. A. — The rock specimen is chiefly composed of the 

 stems of an Encrinite (Poteriocrinus crassus), one of the 

 commonest of the carboniferous fossils. 



EXCHANGES. 



Diatomace.'E. — Orthosira nrenaria well mounted (opaque) 

 for fossil Diatomaceous Material, Sea Soundings, Shell Clean- 

 ings or Guanos. — R. Ruttray, 30, Balfour-street, Dundee. 



Goon Slides for the same or for material. Send lists. — 

 C. L. Watchurst, 13, Denbigh-terrace, Fairfield-road, Bow, 

 London. 



Scales of Fern, Nnthochltena Itsvis (a beautiful slide for the 

 polariscope), for any other well-mounted object.— J. Ford, 

 Stamford. 



Wanted, Geological Slides, Diatoms and other good Slides, 

 — R. H. Philip, Anlaby-road, Hull. 



Wanted, Diatomaceous Earths, chiefly Springfield, Barba- 

 does, Nottingham, and Yarra, for well-mounted slides. — Send 

 list to H. B. Thomas, Boston, Lincolnshire. 



Purm of C. Elpenor, for other pupre. Answer by return 

 if accepted. — Alfred Pickard, Wolsingham, Darlington. 



Eggs— The Little Auk, Stint, Grouse, Widgeon, Harle- 

 quin Duck, Golden Eye, and several others, for rare eggs 

 not in collection. Post Cards not attended to.— J. T. T. Reed, 

 Ryliope, near Sunderland. 



OooD Slides for Mole Crickets, large Green Grasshopper, 

 Great Cockroach, or Stag Beetles.— C. L. Jackson, 11, Heskett- 

 street, Southport. 



A variety of Microscopic Slides. — Send list for list, to 

 Alfred .\llen, Felstead, Essex. 



Wanted, Copy of " Quekett on the Microscope," for his 

 " Lectures on Histology," 2 vols, in 1 ; good order. — 

 Address, Rev. W. Eyre, Northchurch, Great Berkhhamp- 

 stead. 



Oamasus Ctjlfioptratarum,'i)B.ra.site of Geotrupes sfercorarius, 

 mounted in balsam, for any good mounted object. — E. Lovett, 

 Holly Mount, Croydon. 



Diatom. — Achnanthidium lanceohitum mounted, for other 

 good mounted objects. — John C. Hutcheson, 8, Lansdowne- 

 crescent, Glasgow. 



Wanted, Good Microscopical Slides (Diatoms and Seeds 

 excepted) for foreign Snakes, Chameleons, &c., well pre- 

 served in spirits. — Send list to Theo. Lane, Broomy-hill, 

 Hereford. 



Sections of Teeth and of Bone, well mounted, for other 

 well-mounted objects. Diatoms preferred. Send list. — 

 W. Nash, Stroud, Gloucestershire. 



Wanted, Fos«ils from the Pipe-clay beds of the Lower 

 Bagshot Sands, Bournemouth, for other Fossils, British land 

 and fiuviatile Shells, or Lepidoptera.— Address, M. M., Post- 

 olHce, Faversham, Kent. 



British Shells wanted for Minerals, Fossils, or Foreign 

 Shells. — N,, 20, Maryland-road, Harrow-road, London, W. 



BoMBYx Mori. — Mulberry Silkworm Eggs; any one re- 

 quiring a few may have the same on receipt of stamped enve- 

 lope and quill. — Thos. Pickin, Mount-fields, Shrewsbury. 



Chalk Fossils from Charlton and Fossils from the 

 Woolwich Plastic Clay, for Oolitic or Silurian FossUs.— 

 W. G. Freeman, 165, Maxey-road, Plumstead. 



British Shells (good), for good specimens of British and 

 European Defrancias a.nA Pleurotomas [Mangelias). — Mr. M., 

 Foxley Villa, Foxley-road, North Brixton, London, S.W. 



Cdtocala spnnsa. — Desiderata : Satiirnia pavonia-minor, 

 Cossus ligniperda, Smerinthus tilife, Chrerocampa elpenor, 

 Arctia villica, or offers. — H. Tomlinson, East-street, Maiden- 

 head, Berks. 



BOOKS RECEIVED. 



" Monthly Microscopical Journal." April. 



" Boston Journal of Chemistry." March. 



"The Ferae Naturae of the British Islands." By John 

 Colquhoun. London & Edinburgh : W. Blackwood & Sous. 



" Journal of Applied Science." April. 



" Les Mondes." 

 . " The Canadian Entomologist." Vol. v. No. 2. 



" The Canadian Naturalist." Vol. vii. No. 1. 



"The Sanitarian." No. J. 



'.' Popular Science Review." April. 



Commu.vications Received up to 14th ult. — W. G. — 

 H. W. P. R.— T. B. B.— T. B. W.-J. B.— J. F.B.— C. L. W. 

 _W. C — C. S — H. E. W.— M. A. H.— W. H. B.— F. W. S.— 

 A. S.— J. H. E.-W. S. P.-T. B. W.-W. H. W.—U. B. T.— 

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

 — H. P. M. -W. H. S.— C. A. L.— J. C. M.— H. U.— J. P.— 

 G W.— F. T. D.— J. T. T. R.— A. P.— F. W. M.— H. E. W.— 

 W. S.— J. B.— A. A.— E. E.— W. L. W. E.— F. M. S.— C. L.J. 

 -F. G. M.-A. S.— E. L.— T. L.-C. F. W.-J. C. H.— A. G. W. 

 — W. M. B.— A. H.-G. T. J.— W.B. H. — H. A F.— H. S.— 

 C. R — H. G.— W. W.— J. M. D. A.-C. O. G. N.— E. B. F.— 

 R. H. N. B.— R. F. T.— W. N.— J. B.— J. E. R.— J. L. M.— 

 J. C. S.— W. G. F.— H. T.— T. P.-J. H. N., &c. 



