184 



Projection Apparatus and Accessories. 



No. 51 OSS 



51062. 1:4. 



51 064 A. 1:5. 



51.058. Projection Microscope as No. 51,057, on stand, Figu re on p. 18.1, new and im- * (1 

 ] iroved construction, as independent ap]>aratus, for setting up in front of the pro- 

 jection lantern or the heliostat. Price exclusive of the projection lantern illustrated 



in F i g. 51,058, or other accessories 22. 1<>. o 



We carry a complete special price list of apparatus for observing olid, flowing and liquid crystals, 



which will be sent post free on application. 



51.059. 2 Nicol Prisms in brass mount, polariser 20mm, analyser 16mm length of side, for 

 the Lehmann Projection Microscopes just listed. Price (which is liable to alteration 

 without notice) 6. 0. 



51.060. Complete Set of Accessories to the Projection Microscope (Lehmann's) No. 51,057 



or 51,058 10. 9. 6 



(a) Micro Gas Burner for heating the preparations (12s.); (b) 2 Electrolysis Stages for obser- j 

 vations during electrolysis, each 25s. (50 S.); (c) 20 Preparation Glasses, hexagonal (2s. 6 d.); (d) 2n 

 round Watch Glasses, 3 cm diameter (3s.); (e) 20 ditto, 4 cm diameter (4s.): (f) 100 Crystal Glass 

 Object Holders, 4.8x2.8 cm (2s.); (g) 100 Cover Glasses, 1.5x1. 5 cm (2s.6d.); (h) 100 ditto, 2x2 cm 

 (3s. 6 d.); (i) Slide Wire Rheostat for securing fine regulation in electrolytical experiments (20s.): 

 (j) 4 Achromatic Objectives, 1 each 18, 8, 5.8 and 3.2mm focal length (105s. 6 d.): (k) Miscellanies: 

 flask with pipette, tweezers, needle holder, preparing needle, spoon with spatula of white bone (4s. 6 d.). 



51.061. 3 further Objectives, 1.4, 2.5 and 2.2 mm focus respectively 7.1S. o 



Chemicals for making Preparations, Diapositives of solid, liquid and apparently live crystals: 

 in accordance with separate complete list. 



Ready-made Preparations - - on terms to be arranged. 



51.062. Collection of Microscopical Preparations for the School, 50 in calico case, F i g u r e, 



with complete description 1. 15. o 



This collection contains: mole's hair; fish bone; bone; scale of eel: spider's foot; spinning wart; 

 proboscis of fly, bee and butterfly; feeler of beetle; fly's eye; spiracle; fly's foot; paunch of ruminants; 

 bee's sting; butterfly's wing; scale of butterfly; silk; corn thrips; saltatorial leg of cercopis; louse of 

 domestichen; trichina; limb of tape worm; radula; cucumaria; moss corals; polypus; calcareous spi- 

 cules of coral; mail-coat animalcule; sponge, parenchyma; prosenchyma : cork; spiral ducts; dicotyle- 

 dons; epidermis; scale of leaf; crystals; sporangia; pollen; cotton; starch: peat moss; corn mildew: 

 smut; bunt; conferva; diatoms; marl slate. 



51.063. - - Other collection of 50 preparations, without description 1. 18. 



Ventriculus, sectio transversaJis ; Hepar, injectio; Ren. injectio: Sanuuis salamandvao; Dimorphns 

 columbae; Chelifer cancroides; Ixodes ricinus: Kmpis peniiipes, caput; Einpis peniiipes. tarsus; Ala 

 apis; Tarsus apis; Fila erucarum; Epidermis erucae; Tipula. caput; Tracheae erucae; Trichina calca- 

 rata ; Mysis, auditus membra; Pennaria cavolini: Angora, lana; Merino, lana: Cannabis sativa, fila; 

 Linum usitatissimuin, fila; Phormium tenax, fila; Amyluin Tritici; Farina Secalis: Cristals of asparagine; 

 Octaedric cristals of asparagine; starformed parenchym cells; Cellulae crassatae; Cellulae palmae; 

 Cribrose ducts; Lactial ducts; Sp.aJariform duets; Punctiform ducts; Ramified hairs; Multicel'ular hairs; 

 Cycas leaf; Spiral Chlorophyll; Monocotyledon stem (Section); Section of acotyledon; Pollen coryli; 

 Spores with elaters; Section of moss; Section of ivy sprig; Puccinia asparagi; Scleroderma vulgare; 

 Erysiphe communis; Campylodiscus clypeus; Diatomic earth; Marine diatomic earth of Xewguinca. 



In addition to the above-listed collections, we also supply single preparations of 

 the individual classes and orders from the animal, plant and stone kingdoms, as well 

 as special collections for particular purposes, e. g., Wool and Silk Preparations; Prepa- 

 rations relating to the Fur Industry: Vegetable Textile Fibres, Paper Preparations; Pre- 

 parations relating to Viticulture, Zymology and Dairy Produce; Fission Fungi, Nitrobacteria; 

 further, preparations of Starch, Wheat, Roots, Fruits, Condiments; of Provisions 



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Electric Lamps for Microscopy see pages 20 and 71. 



Cl. 301, 279. 



