April 17, 1879] 



NATURE 



cxcv 



JOHN NORMAN, 



MANUFACTURER OF 



I^ICROSCOPES, OBJECTS, CABINETS, 



TABLES, LAMPS, 



And all Glass Appliances for Microscopes, 



HAS OPENED NEW AND EXTENSIVE PREMISES AT 



123, Queen Victoria Street, E.G. 



Lists post free en applieaticn. 



MICROSCOPIC OBJECTS. 



Horn Sections, Blood Discs, Featheri, Hairs, Sections of Bone and Teeth, 

 Fish Scales, Anatomical Preparations from the Human Subject and Lower 

 Animals, Palates of MoUusca, Sections of Shells and Pearls, Polyzoa, whole 

 Insects, Parasites, parts of Insects, Ossicula, Spines, &c., of Echinoder- 

 mata, Spicules of Sponges and Gorgonias, Foraminifera, Botanical Prepara- 

 tions, Diatomacese, Salts, Crystals, Sections of Rocks, Fossils, Minerals, 

 &c 



Ochreous Iron in Moss-like Forms in Calcite, zs. fxi. post-free. 



Stellar Mica, or Canadian Phlogopite, is. sd. post-free. 



Catalo£;aes free. 



THOS. D. RUSSELL, 



EAGLE INSURANCE COMPANY, 



79, PALL MALL. 

 For Livas only. Established 1807. 

 Net Premiums and Interest ......... .m ~. ~. ;f 396,818 



Accumulated Funds .„.........>_ .^ >» ~. ;£3,o83,28i 



Also a Subscribed Capital of more than ... » ... ~. >£i. 500,000 

 Reports, Prospectuses, and Forms may be had at the OflSce, or from anf 

 of the Company s Agents, post free. 



GEORGE HUMPHREYS. Actuary and Secretary. 



JAMES WOOLLEY, SONS, & CO., 



69, MARKET STREET, MANXHESTER. 



CHEMICAL APPARATUS AND REAGENTS 



Fmt Lecttire and Class Demonstration, Laboratory Instmctioa, &C. 

 SETS OF APPARATUS AND CHEMICALS 



For the varicos Public Examinations. 



PortaiU Chemical Cabinets adapted for private study. 



Price Lists on AppHcation. 



48, ESSEX STREET, STRAND. LONDON, W.C. THE MINIATURE MICROSCOPE LAMP 



ADVERTISING. 

 C. H. M A Y <S6 C O., 



GENERAL ADVERTISING OFFICES, 



78, GRACECHURCH STREET, LONDON, E.C. 



(The only .\ddiess.) 



ESTABLISHED 1846. 



-Advertisements of every description received for insertion in all News- 

 :ipers. Magazines, Reviews, &c., a: the same rates as at the offices of the 

 r ^pers. 



Estimates for General Advertising. Reduction for a senes. 



Liberal terms to large advertisers. 



Advertisements are also received for all newspapers, which may be ad- 

 dressed to these Offices, without extra charge, and replies forwarded, if 

 required. 



C. H. MAY & CO., having special communication with the leading news- 

 papers three limes daily, can guarantee the utmos: promptitude and correct- 

 ness of inserticn to all Advertisements er.trusted to them. 



The Press Manual for 1S79, containing a complete List of Newspapers 

 published in the United Kingdom. Post free, 6d. 



ENGRAVINGS AND ELECTROTYPES 



FOR SALE, at prices ranging from is. to 10s., in good condition, ready for 

 printing. Small, medium sire, and large engrasings, comprising a great 

 variety of subjects, suitable for Publishers, Advertisers, and Amateurs. 

 Specimen of any subject required sent post free on appUcation. 



FACSIMILE OF SIGNATURE for 3J. An exact cpy of any name 

 guaranteed. These signatures being engraved in bold relief, are useful for 

 Stamping Books, Circulars, and Documents, or Marking Linen, and made 

 type-high for ordinary Letterpress Printing. 



Sent post free to any address on receipt of 36 stamps. 



FLEET STREET, LONDON, E.G. 



ARTISTIC— To Ladies and Gentlemen with 



seme leisure time, desiring to supplement their incomes, an opportunity 

 is offered of acquiring the ART of DRAWING and ENGRAVING 

 on WOOD in a thoroughly satisfactory and perfect styie. The terms 

 are moderate, and the hours can be made to suit the convenience of 

 pupils. Persons residing in the cotmtry can receive full instruction by 

 correspondence. For further particulars call or address Mr. J. Frakk- 

 UN Nash, Artist and Engraver, 75, Fleet Street, London, E.C. 



FRYS 



GOLD MEDAL, 

 PARIS EXHIBITION. 



COCOA 



In Packets and Tins, Pure 

 Cocoa only, v-ith the super- 

 fluous cil extracted. 



"If properly prepared, there is no nicer 

 or more wholesome preparation of 

 cocoa." — Food, Water, and Air, 

 edited hy Dr. Hassall. 



EXTRACT 



(REGISTERED) 

 PRICE -us. PORTABLE TIN Oi-SE FOR DITTO, ir. 6a. 



JAMES HOW & Co., 



SCIENTIFIC INSTRUMENT MAKERS, 



i, ST. BRIDE ST. {Uiie 2, Fester Lane\ LOSDOiT. 



J. S. FRY & SONS, Bristol and London. 



MINERALOGY AND GEOLOGY. 



24 assorted Minerals for Blowpipe Experiments, with printed List, ia 

 Pocket Case, 2J. ; 24 ditto (second series), is. ; Moh's ScaJe of Hardness 

 of Minerals, 9 Specimens with File and streak tablet in a convenient Case, 

 4J. ; voa Kohbell's Scale of Fusibihty of Minerals, 6 Specimens in Pocket 

 Case, 2J. ; Geological Collecting Bag complete, +?. ; Ditto Hammer 

 Holder and Strap, is. Geological Charts, Books, Hammers, Ciiisels, 

 Lenses, Acid Botdes, Glass-capped Boxes, Cement for Mounting and Re- 

 pairing Fossils, Tablets, Card Trays, &c., &c. Minerals, Fossils, and 

 Rocks, sent on approval and for selection to all parts of the world. 



THOMAS J. DOWNING, 

 38, WHISKIN STREET. LONDON, E.C 



.- CATALOGUES FREE. 



OLDRIDGE'S BALM OF COLUMBIA 



Prevents Baldness and the Hair turning Grey, and form? the 



Ba-is of a Magnificent Head of Hair, Strengthens Weak Hair^ 



and causes the 



WHISKERS AND MOUSTACHIOS to GROW FREELY. 



Sold everywhere, y. 6d., 6s. 6d., and lis.. 



Wholesale and Retail. 



22, WELLINGTON STREET, STRAND, LONDON, W.C. 

 Established Slxty Years. 



HOLLOWAYS PILLS 



THIS 

 MEDICINE 



Is a Certain Cure for aU Disorders of the LIVEE, STOMACH 

 AND BOWELS, A Great PUEiriEE of the BLOOD; a 

 Powerful Invigorator of the System, in cases of WEAZNES& 

 AND DEBILITY, and is onequalled in Female Complaint*: 



