io6 THE MICROSCOPE. 



Chlorophyll of Animals. — The author, K. Brandt, concludes that 

 chlorophyll formed by animals is never found; that, where present, 

 it is due to the presence of unicellular algae, and that the animal 

 hosts may be nourished by the assimilative power of these algae. 



Locomotion of Insects on Vertical Glass Surfaces. — A glutinous 

 liquid is exuded from the apices of hairs which surrounds the lobes 

 of the feet. The writer actually saw this transparent substance 

 emitted from the ends of the hairs. In the case of insects, where 

 there are no hairs, the adhesive material proceeds directly from the 

 pores in the foot. The adhesion of pollen to bees appears to be 

 similarly affected. 



Mounting Legs, Etc., of Insects. — " The chief difficulty is 

 the appearance of air-bubbles in the object after it has been 

 mounted. To avoid this, there is a little dodge not mentioned in 

 most books. When the leg is taken out of the turpentine, instead 

 of placing it at once on the slide, boil it for a few moments in some 

 balsam, kept for the purpose in another tube. While it is being 

 boiled the air will escape, and the balsam will take its place. There 

 will, therefore, be not nearly so much chance of air-bubbles arising 

 when the object is mounted. Of course, this would be rather rough 

 treatment for some Objects ; but with the legs of insects (especially 

 such as Dytiscus marginalis) it generally answers admirably, and 

 saves a vast deal of trouble." — Eng. Mec. 



The Bacillus of Glanders. — Israel has succeeded in finding 

 two forms of bacilli in glanders, and one of these he has also suc- 

 cessively cultivated. Rabbits vaccinated with the fifth and sixth 

 cultivations became infected and died. Post mortem examination 

 showed in them characteristic lymphangitis, ulcers in the nose, and 

 isolated patches in the lungs. Experiments made with pus from 

 abscesses in living animals resulted negatively, as to cultivation in 

 fluids and solids (Koch's preparation). Nodules resembling bacte- 

 ria were found which leads to the deduction that the bacilli possess- 

 ing only slight power of resistance had perished. — O. Israel. 

 Berlin. Klin. Wochenschr., No. 13, 1883. 



