800 THE AMERICAN NATURALIST. [VoL. XXXII. 
The authors discuss at some length the various theories concerning 
the origin of dermoid tumors, and both reach the conclusion that the 
Jætus in fetu theory of Meckel explains most satisfactorily the 
present case. Biologically considered, some of the facts presented 
are very difficult to understand, even on this theory; e.g., the widely 
distributed condition of the eye tissue and the recurrence of the 
entire tumor. 
Dr. Montgomery assumes that some fragments of the original 
growth must have remained behind after the first operation, despite 
the fact that such did not seem to be the case; and that these frag- 
ments contained representatives of all the tissues found in the 
MIROR, WER 
A New Journal of Parasitology. — The attention of naturalists 
was attracted last year by the announcement that the publication of 
a new journal devoted to the study of parasites would be entered 
upon in 1898 by Prof. Raphael Blanchard, of Paris, whose contribu- 
tions to helminthology have been among the most valuable of recent 
years. And the belief was freely expressed that the journal would 
be successful from the start, and would take a high place in the 
periodical literature of science. The appearance of two numbers of 
about 180 pages each afford complete justification for this belief, 
and call for more than a passing notice. 
The Archives de Parasitologie is to be a quarterly devoted, as the 
preface says, “to the study of (all) those ATE which are capable 
of causing disease in man and in the animals.” Its scope, in conse- 
quence, is decidedly extensive, and deals with parasitology in the 
broadest sense rather than with helminthology merely. The numbers 
already issued present articles on bacteria, protozoa, worms, an 
arthropods, as well as on methods and apparatus, while mycology is 
also proclaimed to be within its sphere. On reading the prologue of 
Professor Blanchard one is forced to pause, and wonders whether 
after all such a field is not too wide to keep a circle of special readers 
interested; whether mycology and bacteriology, which have their own 
journals also, appeal in their special development to workers in 
zoology ; and, finally, whether bacteriology in all its wondrous blos- 
soming will not usurp the place of other topics ; and yet the perusal 
of the numbers shows a remarkable balance of interest and influence. 
Nevertheless, here is an evident danger. 
The contents of the numbers at hand deserve more specific mention 
as indicating clearly the character of the periodical, First should 
