PUBLISHER'S NOTICE. 
For some years there has been a constant and increasing demand 
for a thorough and reliable text-book on the Anatomy of the 
Invertebrata ; and no other book having appeared upon the subject 
to meet the requirements and to supersede Dr. Burnett’s translation 
of Von Siebold’s Lerhbuck der vergleichenden Anatomie, which, to- 
gether with the translator’s valuable and extensive notes, is believed 
to be incomparably the best and most complete treatise on the 
science, and the same having been highly commended by Professors 
Agassiz, Silliman, Hitchcock and others, the publisher feels him- 
self justified in offering this edition to the student, confident that it 
will supply a want not at present met by any other work in our lan- 
guage. 
Boston, May, 1874. 
