BAIRD &TXTLOCKL (LONDON) LTD. 



Messrs. Carl Zeiss have discontinued the manufacture of the oil 

 immersion objective, A in. N.A. 1.30. at 6 5s., and have 

 substituted : 



A. Oil Immersion lens, T \ in. N.A. 1.30 



(Lenses made of Fluorite) . . 700 



B. Oil immersion lens, jV in. N.A. 1.25 500 



The price of outfits described on pages 222 to 228 must be amended 

 according to the lenses selected. 



BAIRD & TATLOCK (LONDON) LTD. 



1099 



1099* Microscope, Zeiss, Stand No. Vd., suitable for Chemical Laboratories, Paper 

 Making Factories, Breweries, and Dairies, etc. Coarse adjustment by rack and 

 pinion. Fine adjustment by micrometer screw. Revolving stage. Graduated edge. 

 Centring arrangement on the tube with polariser, analyser, and selenite films for red 



800 



o 

 i 

 i 



6 



o 



of the I. Order 



A. Achromatic objective a2 . . 

 A .. 

 D .. 



yV m - oil-immersion lens, N.A. 1.30 

 Eyepieces Nos. 2 and 4 



B. 

 C. 

 D. 

 E. 

 F. 

 G. 

 H. 

 I. 



Micrometer eyepiece No. 3 

 Triple nosepiece 

 Stage micrometer 

 Thoma's counting chamber 



12 

 o 



15 

 5 



12 



18 

 o 



10 



14 



21 6 



1100' Microscope, Zeiss, Stand V., with fixed round stage, form A, without condenser, but 



with three stops of different apertures . . . . . . . . . . . . 4100 



1101 T Form B, with condenser, N.A. i. .. 



5 10 



1102 T Form C, with condenser, N.A. 1.20 .. .. .. .. 



1103 T Accessories suitable for either of above stands, for students' use : 



A. Achromatic objective aa . . . . . . . . 



B. A | in. . . . . . . . . 



C. D-J in. .. .. .. .. 



D. ^ in. oil-immersion, N.A. 1.30 . . . . . . . . 



E. Eyepieces 2 and 4 . . . . . . . . . . 



F. Double nosepiece . . . . . . . . . . 



G. Or, triple nosepiece . . . . . . . . . . 



(For other Objectives and Eyepieces see pages 227-229.) 



5 16 



0120 

 100 

 1 15 

 650 

 12 

 0150 

 100 



.CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



