The Intra-Uterine Growth-Cycles of the Guinea-Pig. 



By 

 J. Marion Bead. 



(From the Kudolph Spreckels Physiological Laboratory of the 

 University of California.) 



With 2 diagrams. 



Eingegangen am 5. November 1912. 



Archly f. Entwicklungsmechanik. XXIV. 



