274 NEGRETTI AND ZAMBRA, HOLBORN YIA.DUCT, E.G. 



Each. Each 



s. d. s. d. 



1015 Gold Size ... per bottle 010 



1016 Asphalte Varnish .,010 



1017 Damar ditto V . . . ,,016 



1018 Glycerine JeUy . ,,010 



1019 Deane's Gelatine Medium 020 



1020 Farrant's ditto 020 



1021 Marine Glue 010 



1022 JEther, Acetic Acid, Liquor Potassas, Solution of Chromic Acid, 



Turpentine, Carmine Solution, Logwood Solution, &c., &c., 



per bottle, from 010 



APPARATUS FOR COLLECTING MICROSCOPIC OBJECTS, &c. 



1023 Complete Apparatus for collecting Animalculae, Diatoms, Desmids, &c. &c., 



consisting of Collecting or Pond Stick, Spring Clip with bottle, Metal 

 Ring for gauze net, Spoon and Weed Knife to screw into collecting stick, 

 Strainer, Drag Hooks, &c 220 



1024 Collecting Bottles, clear white glass, with welted necks 



fitted with corks and turned wood tops 



Capacity 123 ounces 



Per doz. 3s. 3s. 6d. 4s. 



1025 Set of 6 Collecting Bottles, in japanned tin pocket case 050 



1026 Pipettes 003 006 



All other Chemical Tests, Reagents, &c., &c., required for Microscopic 

 Mounting supplied to order. 



SPECTRUM APPARATUS FOR THE MICROSCOPE. 



1027 Sorby's Micro-Spectroscope 5 10 



1028 Ditto ditto with Rackwork motion to the 



Eye-piece . 5 15 



1029 Ditto Standard Spectrum Scale 110 



See also No. 929, page 281. 



MICROSCOPIC OBJECTS. 



1030 A Set of Twenty-four Microscopic Objects, Transparent 



and Opaque, dry mounted and named ; in a neat box 036 



1031 An extensive Assortment of Balsam Mounted 



Microscopic Objects, of English and French mounting 010 016 



These objects consist of insects, parts of insects, such as wings and wing-cases, stings, tongues, 

 eyes, dissections of the trachea and bronchial tubes, antennae, legs, the scales of butterflies 

 and moths, zoophytes, ferns, fuel, mosses, madrepores, sections of recent woods, leaves, 

 petals, and farina of plants, feathers, hairs, exuviae of spiders and aquatic insects, algae or 

 sea weeds, sponges, echinus' spines, shells. 



