OF PARASITIC ORIGIN. 37 
ageregation of spores is Sarcina, does not follow ; indeed, that 
ageregation has anything to do with its formation is very 
problematical. 
Many of the diseases (tinea) have been made to produce 
one another, and more proof of this kind could be brought, 
but Dr. Fox rightly objects to turning his patients’ skins 
into miniature botanic gardens. 
An excellent and philosophical theory of the treatment of 
tinea in accordance with the views propounded concludes the 
work. 
The author says (preface, p. vi), “I claim for my facts the 
character of trustworthiness, since everything has been re- 
jected which repeated observation has not, in my mind, 
shown to be the truth.” This character of trustworthiness is 
evidenced throughout the treatise, which also shows unmis- 
takeably the great care and research bestowed on its prepa- 
ration. We hope that the subject will not be considered as 
exhausted, but that the appearance of Dr. Fox’s book will 
lead to further observation on the parasites of man, both by 
botanists and medical men. 
We may mention that the book is well printed and got up 
by Mr. Hardwicke, and that only two misprints were observed 
by the writer of this article. 
