Editorials : 



Hugo Kronecker (with portrait) 523 



Delay in the Issue of the Biochemical Bulletin 524 



Causes of the Clotting of Blood 524 



Lipins : a Matter of Terminology 525 



Creatin Content in Muscle 527 



On the Constitution of Matter 529 



Remarks on Research 531 



BooKs Received 537 



Index: Volume III. (Includes names of authors, and impersonal and per- 

 sonal subjects) 545 



Title Page for Vol. III, with Summary of Contents, List of Illustra- 

 TioNS, etc i-xvi 



ZIV 



