8o3  Production  of  CandelUla  Wax.      {A™-  J°u,r-  Pharm- 
J  <•    December,  1919. 
Suppose  we  wish  to  make  up  15  Cc.  of  vaccine  which  shall  con- 
tain 500  million  organisms  per  cubic  centimeter.  The  red  blood  cell 
count  we  will  suppose  to  have  been  50,  and  the  bacterial  count  75. 
We  now  substitute  these  numbers  in  the  proper  formula  as  given, 
and  have : 
1-36  X  5Q 
75  ' 
which  is  equal  to  0.9. 
This  is  the  number  of  cubic  centimeters  of  the  suspension  of 
organisms  which,  when  made  up  to  15  Cc,  will  give  a  vaccine  con- 
taining 500  million  organisms  per  cubic  centimeter. 
When  the  exact  content  per  cubic  centimeter  of  red  blood  cells  is 
known  for  the  blood  used  in  the  comparison,  the  following  formula 
may  be  used  in  any  case : 
Total  number  of  organisms  needed, 
b 
-  X  number  of  r.b.c.  per  Cc. 
a 
This  gives  the  number  of  cubic  centimeters  of  the  suspension  of 
organisms  in  making  up  a  desired  quantity  of  vaccine  with  a  desired 
content  of  organisms. 
Note:  Hosp.  Sgt.  B.  H,  Brown,  professionally  an  instructor  in 
mathematics,  made,  at  the  request  of  the  author,  the  first  formula 
used  by  the  author  in  standardizing  vaccines.  The  author  extends 
thanks  and  credit. 
PRODUCTION  OF  CANDELILLA  WAX  IN  MONTEREY, 
MEXICO.1 
By  Vice  Consul  Thos.  Dickinson, 
Monterey. 
There  are  great  quantities  of  candelilla  shrub  in  the  Monterey, 
Mexico,  consular  district.  It  is  found  chiefly  in  the  Montemorelos 
and  Galeana  districts,  located  in  the  northwestern  part  of  the  State 
of  Nuevo  Leon,  also  in  the  Bustamante  and  Villaldama  districts,  in 
the  northern  part  of  the  State.    This  shrub  is  grown  entirely  with- 
1  From  Commerce  Report,  September  12,  1919. 
