844 SUMMARY OF CUREENT RESEARCHES, ETC. 



blade of a knife, when the steam will condense and the disappearance of 

 the water can be observed with a half-inch power. As the globules 

 evaporate, they appear to leap into the air, the actual point of final 

 disappearance, however, being difficult to detect. Some curious 

 questions as to molecular action are raised by this experiment, as well 

 as by those which he suggested should be made in connection with thin 

 sections of iron. 



Kurz's Transparent Microscopical Plates — Dr. W. Kurz, of 

 Vienna, has edited plates which contain representations true to nature 

 of typical preparations intended to produce the impression of a micro- 

 scopic image. They are printed in transparent colours, and during 

 observation are turned towards the light. The special advantages 

 claimed for this mode of demonstration over the use of the Microscope 

 are that a whole school can observe at the same time the object 

 described, so that the pupils need not leave their seats and the teacher 

 can draw their attention to every single part of the object represented. 



DxiKCAN, A. W. — The Microscopical Examination of Food for Adulteration. 



Trans. Manchester Micr. Soc, 1888, pp. 49-52. 

 Feeebokn, G. C. — Histological Technique of tlie Blood. 



Amer. Hon. Micr. Journ., X. (1889) pp. 217-22 (1 pL). 

 Whelp LEY, H. M. — Microscopical Laboratory Notes. 



The Microscope, IX. (1889) pp. 139-40. 



