QUARTERLY CHRONICLE. 153 
Miscellaneous—A new work on ‘ The Theory and Use of 
the Microscope’ has just been published by Professor Nageli, 
of Munich, and Herr Schwendener. ‘Those interested in the 
study of the nematode worms should see Dr. Anton Schnei- 
der’s ‘Monograph of the Nematodes,’ published at Berlin. 
It is a complete history of the species, anatomy, and develop- 
ment of this obscure group, and is most beautifully illus- 
trated. 
Gregarine in the Hair.— We would caution persons against 
accepting as truth the vague statements which have been 
made in newspapers lately on this matter. No satisfactory 
evidence has yet been offered at all of the existence of Grega- 
rine in the hair under any circumstances. We have merely 
the statement of a Russian observer, some year or two since, 
to rely upon. Further, eggs of Pediculus might, under 
certain circumstances, present close resemblance to Grega- 
rine. As to the bodies spoken of being Gregarine from the 
Pediculus, there is not a shadow of proof. No Gregarine 
have yet been figured or described from lice; and it is not 
very probable, though possible, that an insect with a haus- 
tellate, minutely opening mouth would get affected by these 
parasites. In addition to this, no Gregarime are at present 
known which are found on free and exposed surfaces, such as 
the hair ; if they left the pediculi they would not leave them 
as Gregarine. ‘The fact is very few people know what a 
Gregarina is, or have ever seen one, and hence the abundant 
nonsense which is written about them; they are becoming 
the scape-goats of writers on microscopic organisms—witness 
Dr. Balbiani’s paper on the silk-worm disease. 
