120 



112. Microscopic Objects, consisting of British Insects/arranged in con- 

 formity with their organization, with printed 

 names, forming an excellent guide to the study 

 of Entomology, in glazed cases, shewing the 

 _ entire classification at one view ... £5. 5s. to 21 

 113# » in cases containing 12 thin sections of woods, 



neatly mounted, ABCD 6 

 "*' " » 30 „ A. B. C. exogens 15 



"2* " " 20 " D. endogens 



llb - » „ 90 to 200 (choice) 



The endogenous woods are cut in two directions, and the exogenous in 

 three, so that the structure of the plant may be accurately seen • that 

 placed next the name is a horizontal or transverse section, the others 

 are longitudinal, the middle one being parallel to the medullary rays 

 (radial), and the end section perpendicular to them (tangental) Thev 

 afford excellent examples of the elementary structure of vegetables, and 

 exhibit most of the forms and disposition of the cellular and vascular 

 tissues, and woody fibres of plants, in situ. 



117> >> thin sections of fossil woods 2s. to 



®* " » cut in two or three directions 



" » „ cases of 2 2 



These sections are cut so thin, that they transmit light as readily as the 

 recent woods j and shew the form and disposition of the woody fibre 

 vascular tissue, medullary rays, glands, pith, &c. 



" cases of, consisting of organic fabrics, viz. 



flax, cotton, mummy cloths, &c. ... 

 121 ' " » botanical, to illustrate vegetable 



organography 



122 * » thin Sections of Coal, Charcoal, Jet, Lepido- 



dendrons, Flint with organic remains, Topaz 

 and Quartz with moveable fluids, Prismatic 

 Felspar, Hyperstene, Recent and Fossil Bone, 

 Turbinolia, .(Erolites, Limestone with organic 



remains, &c 



123 - " consisting of the ashes of vegetables ............ 



124, » sets of minute crystals, for shewing coloured" 



tints, black cross, dichroism, &c. by polarizing 



microscope, (M. I.) neatly mounted 



JJ?; " sets of test objects, (M. C. 144,) 7s. 6d. to 1 l 



~°' » cas es and cabinets, containing specimens se- 



149 pi i on r lected from each of the above classes £2. 2s. to 50 



1-7. .Blank fehdes, foi mounting objects, plain glass, 2 inch ... per dozen 



„ bevelled edges 2 ,, 



" » 3 ,, t) 



plate glass, edges greyed 2 „ 



>> ,, 3 ,, 



>> polished 2 „ ,, 



" >> 5 ,, s 



prepared with mica 2 „ 

 " >» 3 ,, >, 



.. ,. » circular, various sizes „ 



138. Blank Discs, for ditto, opaque, i inch diameter per eross 



lo9 - " » l-8th „ ... s 



140. Thin Glass, l-30th to l-100th of an inch thick, for covering objects 



BOOKS. 



The Microscopic Cabinet, with coloured plates s> n 1a „ 



The Micrographia =i 18 



The Natural History of Animalcules ?. ? 6 



List of 2000 Microscopic Objects '.'.'.'.'.'.'."". 



A Catalogue of British Insects, arranged accord\ : ng'to'their organization".*" I o 



Ihe Microscopic Illustrations, a new edition, emended and enlarged , o lo < 



130. 

 131. 

 132. 

 133. 

 134. 

 135. 

 136. 

 137. 



