108 



L. CASELLA'S CATALOGUE 



FIG. 1142. 



FIG. 1158. 



1150. Stand Condensers 10 



1152. WENHAM'S WHITE CLOUD ILLUMINATOR .- . - > 12 



1153. PEOG PLATE ..... V . 056 

 1154 MAHOGANY CABINET, with packings for all the above apparatus 15 



1155. The above stand and apparatus, if taken in one . . ' " 11 



1156. The Student's Complete Monocular Microscope, with rack motion to bar and 



lever fine adjustment for high powers, large sliding stage, plain and concave 

 mirrors, one eye-piece, A or B, stand condenser, live box, stage forceps and 

 pliers, superior English achromatic objective to separate, forming 1-inch, 

 v^-inch and ^-inch power, in neat polished mahogany case (fig- 1156), p. 109 



660 



1157. To this microscope is sometimes added a polarizing apparatus, 1 Is., and also an 



improved lever stage, with ^-inch rectangular motions by which it is espe- 

 cially adapted for use with large zoophyte trough or stage plate 1 13 6 



1158. Cassella's Popular Educational Microscope (fig. 1158), consisting of an 



excellent and convenient stand, with coarse and fine adjustments, tube fitting to 

 stage for apparatus, large diaphragm, one eye-piece, A or B, an excellent English 

 achromatic forming 1-inch, f-inch, and 3 -inch, powers of 40 degrees angular 

 aperture . . . . . . . 3 10 



1159. Or in mahogany cabinet case . . . . . 400 



