THE DEVELOPMENT OF AMPHIOXUS 59 



of historical importance, as well as articles containing extensive 



literature references. 



In each reference the author's name is followed by the title of the 



work and the reference to the journal in which the article appeared, 



or to the place of publication, in case the work appeared separately. 



The number of the volume (Band, tome, etc.} is printed in black-face 



Arabic numerals, followed by the year of its publication. References 



to pages, parts, etc. are omitted except in a few instances where this 



information is necessary. 



The abbreviations of the journals more frequently referred to are as 



follows : 



Amer. Jour. Anat. American Journal of Anatomy. Baltimore and 

 Philadelphia. 



Amer. Jour. Physiol. American Journal of Physiology. Boston. 



Anat. Anz. Anatomischer Anzeiger. Jena. 



Anat. Hefte. Anatomische He/te. Wiesbaden. 



Anat. Record. Anatomical Record. Philadelphia. 



Arch. Anat. u. Entw. Same as Arch. Anat. Physiol. 



Arch. Anat. Physiol. Archiv fur Anatomic und Physiologic. Leipzig. 



Arch. Biol. Archives de Biologic. Leipzig and Paris. 



Arch. d'Anat. Micr. Archives d y Anatomic Microscopique. Paris. 



Arch. Entw.-Mech. Archiv fur Entwickelungsmechanik der Organismen, 

 Leipzig. 



Arch. mikr. Anat. Archiv fiir mikroscopische Anatomic undEntwicke- 

 lungsgeschichte. Bonn. 



Arch. Naturgesch. Archiv fur Naturgeschichte. Berlin. 



Arch. Zellf. Archiv fiir Zellforschung. Leipzig. 



Arch. Zool. Exp. Archives de zoologie experimentale et general. Paris. 



Biol. Bull. Biological Bulletin. Woods Hole, Mass. 



Biol. Centr. Biologisches Centralblatt. Leipzig. 



Bull. Acad. Sci. Cracovie. Bulletin de I 'Academic des sciences de 

 Cracovie. 



Bull. Mus. Comp. Zool. Harvard Coll. Bulletin of the Museum of Com- 

 parative Zoology at Harvard College. Cambridge, Mass. 



C. R. Acad. Sci. Paris. Comptes rendus hebdomaires des seances de V Aca- 

 demic de sciences. Paris. 



C. R. Soc. Biol. Paris. Comptes rendus des seances et memoires de la 

 Societe de biologie. Paris. 



Ergeb. Anat. u. Entw. Ergebnisse der Anatomic und Entwickelungs- 

 geschichte. Wiesbaden. 



Intern. Monatsschr. Anat. Phys. Internationale Monatsschrift fiir 

 Anatomic und Physiologic. Leipzig. 



Jena. Zeit. Jenaische Zeitschrift fiir Naturwissenschaft. Jena. 



Jour. Anat. Physiol. Journal of Anatomy and Physiology. London. 



