110 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



shown lying in front of the instrument in the illustration, can be substi- 

 tuted. 



It is only necessary to add that the movements of both Microscope 

 and stage are graduated, so that any desired field may be recorded. 



Leitz Dolken's Stand. — This instrument (fig. 6) was designed to 

 overcome the difficulty experienced when examining large bacteriological 

 culture-plates on the ordinary Continental model stand, owing to the 



Fig. 4. 



short distance from optic axis to limb. The stand is of the same size as 

 the Leitz No. 1, the substage arrangements and focussing adjustments 

 being similar in every respect. The metbod by which increased space 

 is obtained is so clearly shown in the illustration as to make further 

 description superfluous. 



New Hot Stage.* — Dr. A. Macfadyen describes a hot stage, in the 

 * Trans. Jenner (late British) Inst. Prev. Med., ser. ii. (1899) pp. 246-8 (2 figs.) 



