512 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



C. Baker's New Model D.P.H. Microscopes.* — These instruments 

 are provided with a body-tube lh in. diameter, in which slides a draw- 

 tube carrying an eye-piece ,23 2 mm. diameter. They are fitted with 



Fig. 74. 



diagonal rack-and-pinion coarse-adjustment which is carried on a limb 

 cast in one piece with an opening in which the fingers can be placed 

 when lifting. The milled heads of the fine-adjustment are placed on 



* C. Baker's Special Catalogue, 1909. 



