764 



Yttrium — Coitiniicd 

 titrif acid, 451 

 oxtnnal coiiiitiny;, 152 

 niicroradiograpliN of bono, 451 

 paralliMoid lionnoiie, 451 

 pi 1 rclatioiisliip, 451 

 rcsoihiiiti; snriat'cs, 451, 452 



Zinc, carious dculiu, 203 



SUBJECT INDEX 



ZirpliaccL 10, 11 



Zoua fasciculata, 429 



Zoua glomerulosa, antler growth, 361 



Zone of partial dcmincrali/ation, 



shell drilling, 58, 59 

 Zones, resorption surfaces, 499 

 Zooplankton organisms, 7 

 Zooxanthellae, 1?, 39 

 Zymogen molecule, s\ulhcsis, 687 



X'/'' 



