BAIRD &. TATLOCK (LONDON) LTD. 



1094 



1095' 



Microscope, Zeiss, Stand No. Hid. (Fig. 1092), for Botanical and Zoological Investiga- 

 tions. Coarse adjustment by rack and pinion. Fine adjustment by Berger's micrometer 

 movement. Revolving vulcanite stage with centring appliance. Condenser, N.A. 1.40, 

 in polished mahogany case .. .. .. .. .. 14100 



A. Achromatic objective a2 . . . . . . . . 0120 



B. A , . . . . . . . . . 100 



C. ,. C . . . . . . . . . . i 10 o 



D. E .. .. .. .. 300 



E. y 1 !; inch oil-immersion lens, N.A. 1.30 . . . . . . 650 



F. Plankton objective (water-immersion) . . . . . . i o o 



G. Eyepieces Nos. 2 and 4 .. .. .. .. .. o 12 o 



H. Eyepiece No. 3 with micrometer .. .. .. .. 0180 



I. Glass cell for Plankton searcher . . . . . . . . 036 



]. Triple nosepiece .. .. .. .. .. .. 100 



K. Abbe drawing apparatus . . . . . . . . 300 



L. Stage micrometer, i millimetre into ,,',,, .. .. .. o 10 o 



Microscope, Zeiss, Stand IVb., suitable for Bacteriological Work, Medical 



Practitioners, etc. Coarse adjustment by rack and pinion. Fine adjustment with 

 ordinary form micrometer movement with divided head. Condenser, N.A. 1.20, with 



iris-diaphragm, in mahogany case . . . . . . . . 10 10 o 



A. Achromatic objective A.. .. .. .. .. 100 



B. D .. .. .. .. i 15 o 



C. Jj inch oil-immersion lens.. N.A. 1.30 . . . . 6 =5 o 



D. Eyepieces Nos. 2 and 4 . . . . . . . . 0120 



E. Triple nosepiece .. .. .. .. .. .. 100 



1096 T Large mechanical stage for above .. 



1097' Microscope, Zeiss No.IVc. (Fig. 1095), for Botanical and Zoological Investigations. 



Coarse adjustment by rack and pinion. Fine adjustment by ordinary microrr.i'ter move- 



ment, with complete Abbe substage condenser, N.A. 1.20 



A. Achromatic objectives a2 . . 



B. A .. 



C. C .. 



D. F. 



E. T V inch oil-immereion lens, N.A. 1.30 



F. Plankton objective (water-immersion 1 ! 



G. Eyepieces. Nos. 2 and 4 . . 



H. Eyepiece, No. 3 with micrometer 



I. Glass cell for Plankton searcher 



J. Triple nosepiece . . 



K. Abbe drawing apparatus . . 



L. Stage micrometer 



5 



12 

 O 



IO 

 O 



5. 



o 



12 



18 



3 

 o 

 o 



IO 



1098' Microscope, Zeiss, IVf. (Fig. 1095), suitable for Chemical Laboratories, Paper Making 

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

 Fine adjustment by micrometer screw, with divided head. Revolving stage with graduated 

 edge, centring arrangement on the tube, complete with Abbe substage condenser, N.A. 

 1. 20. Apparatus for polarised light, with selenite film for red of the I. order, in polished 

 mahogany case . . . . . . . . . . . . 14 15 o 



A. Achromatic objective a2 . . . . . . . . . . 0120 



B. A . . . . . . . . . . 100 



C. ,, D . . . . . . . . i 15 o 



D Jj inch oil-immersion lens, N.A. 1.30 .. .. .. 650 



E. Eyepieces, Nos. 2 and 4.. .. .. .. .. 0120 



F. Micrometer eyepiece, No. 3 . . . . . . . . 0180 



G. Triple nosepiece .. .. .. .. .. .. 100 



H. Stage micrometer . . . . . . . . . . o 10 o 



I. Thoma's counting chamber . . . . . . . . o 14 o 



34 



21 2 



extra 5 10 



30 15 6 



r.28 1 



CROSS STREET HATTCTNT GARDEN, E'C 



224 



