146 



Brought forward Mk. 896. Code-words 



Glass cell for the Plankton-searcher Mk. 3.50 



Vertical Illuminator, No. 42 18. 



Revolving Vulcanite Stage, No. 45 25. 



Revolving Nose-piece for 4 objectives, No. 50 32. 



Drawing Apparatus, No. 1 1 1 60. 



Drawing-table, No. 114 52. 



Stage Micrometer, No. 118 10. 



Screw Micrometer Eye-piece, No. 124 ,, 90. 



Cover-glass Gauge, No. 130 15. 



Haemacytometer, No. 149 36. 



Apertometer, No. 155 ,, 70. 



Test-plate, No. 157 10. 



Polarizing Apparatus, No. 169 58. 



Selenite Film for Red of the I. Order, No. 180 3. 



Spectroscopic Eye-piece, No. 190 200. 



Drum fitted with PoRRO-prisms, No. 192 40. 



Index Eye-piece, No. 194 36. 



Prism -rotator, No. 196 62. 



Capillary Rotator, No. 198 50. 



Incandescent Gas Lamp with spherical glass flask, No. 199 . 22. 



Collective Lens with iris-diaphragm, No. 201 30. 



MALTWOOD'S Finder, No. 217 20. 



Outfit completed by adding: 



a) Stand la, No. 58 375. 



Leather travelling case 30. 



Packing I! 413- Mk. 2251.50 Petardear 



or 



b) Stand Ic,No. 66 . 400. 



Leather travelling case ,, 30. 



Packing " _ fL ^438 != H 2376.50 Petequius 



or 



c) Stand II*, No. 72 290. 



Leather travelling case 26. 



Packing_^_ 324- 2137.50 Petifoque 



Stand II a being equipped with a revolving vul- 

 canite stage, No. 45, that item, amounting to 

 Mk. 25. , is omitted from Set 2C. 



We recommend the addition of either Specification No. 20 or No. 22 as a suitable complement for 

 dissecting purposes. 



In the event of a microtome being required as well -we shall be pleased to supply it at the 

 maker's catalogue price (see notice on p. 140). 



