IV 



HA RD WICKE'S SCIENCE-GOSSIP. 



ew, I^are, and Interesting Jlicroscopic ©bjects. 



Type Slide of 100 Diatoms, with list of names ' 



Pollen in situ on Stigma, Oenothera . . 



Lieberkuhn glands in Human Intestine 



Water Scorpion. Nepa Sinerea 



Section of Amphioxus through Pharynx 4 . 



Pleurosigma angulatum, test object, dry 



Scales of Podura, Lepidocyrtus curvicollis. test object, dry . . 



Sporocarp of Pilularia, Microspores, and Microspores 



Acarus of Itch, Sarcoptes Scabeii, male and female, on i slide. . 



Meibomian Glands in section of Human Eyelid 



Any of the above 



Illustrated Catalogue of Microscopes 



21s. Od. Type Slide of Butterflies, Moths, &c, with list of names .. 18s. 6d. 



Is. Od. New and very fine Slide, containing about 200 various Diatoms from 



Is. 9d. S. Peter, Hungary 6s. OA 



Is. €d. Stem of Indian Poison Berry, Anamirta Cocculus Is. Od. 



Is. 9d. Head of Lamprey. Section through gills- Very fine .. .. . Is. 9d. 



2s. Od. Trans-section of Earthworm through middle Is. 9d. 



2s. Od. Book Mite, Cheiletus eruditus Is. 6d. 



Is. 6d. Grain of Wheat and Embryo, four sections 01 one slide .. Is 6d. 



4s. Od. Pediculus Capitis, male, female, egg and larva one slide .. .. 4s. Od. 



Is. 9d. Phantom Shrimp, Caprella Linearis .. ■• •• ■• Is. 6d. 

 forwarded on receipt of remittance for price. 



and Apparatus. Classified List of 40,000 First-Class Objects. 



EITHER OE ABOVE SENT POST FREE ON APPLICATION TO— 



W. WATSON & SONS, Opticians to Her Majesty's Government, 



313, HIGH HOLBORN, LONDON, W.C., 

 AND 251, SWANSTON STREET, MELBOURNE, AUSTRALIA. [Established 1837. 

 Awarded 20 GOLD Medals at various International Exhibitions) including 2 GOLD MEDALS, Paris Exhibition 



1889, for Microscopes, &c. 



(list of New Preparations is now Ready.) 



The few following Slides are selected on account of their GREAT BEAUTY IN ADDITION 



TO THEIR SCIENTIFIC VALUE. 



Section of a rare Sponge, Dictyocylindrus stuposus, with d. 



sphajro-stellate and other forms of spicules X 3 



Ditto of Tethya lyncurium,wit\i sub-stellate, cylindro-stellate, 



and other spiculae showing to perfection 16 



(36 other species of Sponges on hand.) 

 The fine Zoophyte Coryne fruticosa, showing full structure of 



polyps, cluster under long cover ... X 6 



Obelia dkhomata, cluster, with polyps expanded and 



medusids showing through walls of gonophores ... ... X 3 



Lucernaria, the "lovely lamp-polype," with its eight clusters 



of tentacles expanded, and its whole structure clearly 



denned 2 O 



(20 other species of Hydrozoa on hand.) 

 Section of Anemone Bunodes, showing all the detail of the 



diagrams in the text-books X 6 



Parcels of these Slides (packed in Trays, giving no trouble in examining and replacing) will be sent on approval if desired, free 



of charge and of risk. 



J. SINEL, CLEVELAND ROAD, JERSEY. 



Section of cluster of A Icyoniitm digitatum, showing structure s. d. 



of animals, matrix, and spiculae X 3 



(14 other preparations of Actinozoa.) 

 Young Asterina, the "gibbous starlet," new series of this 

 favourite slide, with two specimens, showing dorsal and oral 

 sides, the tissues carmine, plates and spines clear, very 



beautiful X 6 



24 other preparations of Echinoderms.) 

 The beautiful pelagic annelid Heteroneries (Erstedii, showing 



its three kinds of feet, toothed jaws, etc-, etc. X 6 



Young Cirrhatulus borealis, showing structure of its bran- 

 chial threads, internal anatomy, etc. ... ••• X 3 



(100 other subjects in this Section.) 

 History of the Ship Barnacle, set of three slides, viz. : — 



Nauplius, Pupal Stage, and A dult, divested of valves ... 4 O 

 (About 200 subjects in Crustacea.) 



WORKS BY RICHARD JEFFERIES. 



NATURE NEAR LONDON. 



Post 8vo., cloth limp, 2s. 6d. each. 



I THE LIFE OF THE FIELDS. 



THE OPEN AIR. 



THE EULOGY OF RICHARD JEFFERIES. By 



Besant. Second Edition. With Photograph Portrait. Crown 8vo., cloth extra, 6s. 



LONDON: CHATTO AND WINDUS, 214, PICCADILLY, W. 



Walter 



J. H. STEWARD'S 

 HIGH-CLASS MAGIC LANTERNS 



AND 



DISSOLVING VIEW APPARATUS, 



AS SUPPLIED TO UNIVERSITY COLLEGES, &c. 



THE NEW ERA IN LIME-LIGHTING. 



Compressed Gas in Steel Cylinders, very strong and very light. Con- 

 taining from 6ft. to 125ft. Oxygen Gas 40". per foot, or 7,d. in quantity. 



BEARD'S PATENT SMALL-SIZE REGULATORS, for automatically 

 delivering the supply of Gas from Cylinder to Lantern. Perfect for 

 Dissolving. Price 30s. 



Microscopes for Table Use or for Fixing to Lanterns for Projections. 



^ Photographic Slides and Dissolving Views in great variety, on SALE 

 OR HIRE. New Sets for this Season. 



ILLlNTl{4Ti;i> CATALOGVEi GRATIS, POST MM-H. 



406, 457, STRAND; 54, C0RNHILL, LONDON- 



