Aib.  Jour.  Pharffi.  1 
November,  1911.  j 
Insects  Destructive  io  Books. 
holes,  as  though  made  by  shot,  often  found  in  books  bound  in  sheep- 
skin. A  careful  examination  of  bindings  showing  these  peculiar 
shot-like  holes  failed  to  show  any  galleries  leading  into  or  along  the 
back  of  the  books,  which  the  Coleoptera,  the  insects  named  as  com- 
mitting these  ravages,  would  make ;  and  careful  observation  will  re- 
veal that  instead  of  the  holes  being  made  by  beetles,  that  a  species  of 
Trichina,  a  parasite  which  at  present  causes  great  losses  to  sheep- 
breeders,  is  the  source.    The  skins,  even  after  going  through  the 
Fig.  I 
Book  from  British  Guiana.    The  volume'is  bored  through  by  a  species  of  Coleoptera. 
various  processes  of  tanning,  still  contain  the  same  basic  principles 
as  in  the  primo  state. 
Bindings:  Printed  Cloth  Bindings. — These  bindings,  on  account 
of  the  oils  and  greases  used  in  their  manufacture,  are  subject  to  the 
ravages  of  those  insects  which  have  use  for  such  substances. 
Species  of  Blattidcc  and  Gryllidcc  are  fond  of  these  bindings. 
Printing  Inks. — While  investigating  the  various  printing  inks, 
Mr.  Thomas  A.  Bradley,  President  of  the  Security  Bank  Note 
