Xll 



HA R D WJCKE ' S SCIENCE-GOSSIP. 



lew, I^are, and Interesting Jlicroscopie ©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 



Pleurosigma angulatum, test object, dry 



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

 Sporocarp of Pilularia, Microspores, and Macrospores .. 

 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 



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

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



S. Peter, Hungary - 6s. Od. 



Stem of Indian Poison Berry, Anamirta Cocculus Is. Od 



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



Trans-section of Earthworm through middle .. 1c. 9d. 



Book Mite, Cheiletus eruditus Is. 6d. 



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



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



Phantom Shrimp, Caprella Linearis Is. 8d. 



fomvarded on receipt of remittance for price. 



21s. Od. 

 Is. Od. 

 Is. 9d. 

 Is. 6d. 

 Is. 9d. 

 2s. Od. 

 2s. Od. 

 Is. 6d. 

 4s. Od. 

 Is. 9cL 



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



EITHER OF 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. 



ENTIRELY NEW SERIES OF 



ZOOLOGICAL MICRO -PREPARATIONS. 



J. d. 



Section of Sponge, " Sycon," showing flagellated cells ... 2 O 



Obelia geniculata. showing medusids in gonophores ... ... X 6 



The Little Plumed Worm, Othonia ... _ 1 6 



Caligtis rapaxy tissues differentiated by osrmc... ... ... X 6 



Chalimus. sp. ... ... X 6 



Asterope Jlfari&, showing median and compound lateral eyes, 



with all the detail of the figure in claus. Two on slide ... X 6 

 Nebalia Geoffroyi: " Probably an offshoot of the Phyllopod- 

 like ancestors of the Malacostraca, which has persisted to 



the present time " ... ... ... X 6 



Young of Talitrits locusta ... X O 



Corophium longico7'ne ... ... X 3 



Anceus-maxillaris, male ... 



female (= Praniza ccurula) with natural 



colours preserved ... ... 



Larval Ascidians, " F'ragarizim" showing the rudimentary 



eyes — auditory organs and urochord. Two on slide ... X 

 Adult of the same, showing eggs, and embryos in atrial cavity X 

 Section of Colony of compound A-cidians, " Didemnum" 



showing the cellulose cells in matrix, spiculae, etc. ... ... X 



Cluster of Eggs of Fish, " Gobius," showing embryos in 



different stages of development, transparent X 



The newly-discovered Marine Pseudo- Scorpion, " Obishtm 



littorale'* (Moniez) ... ... 3 



X 3 



Every Slide is guaranteed Permanent, and identification of Forms authentic. 

 Parcels of these Slides can be sent oji approval, free of charge and risk. NEW lists are ready. 



J. SIIVEL., OLEVELAlNT> liOAD, JERSEY. 



" WORKS BY RICHARD JEFFERIES, 



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



NATURE NEAR LONDON. I THE L IF E OF THE FIEL DS. I THE OPEN AIR. 



THE EULOGY OF RICHARD JEFFERIES. By Walter 



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



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



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 qd. per foot, or yi. 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. 



ILLUSTRATE© CATALOGUES GRATIS, POST FREE. 



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



