Am.  Jour.  Pharm. 
September,  1900. 
}       Investigation  of  the  Tannins. 
429 
Table  No.  II. 
TABLE  OF  ESTIMATIONS  WITH  SOLUTION  OF  POTASSIUM  IODIDE. 
Solution 
No. 
Date. 
Iyitres  of 
Air  Passed. 
XT \J  LI  I  3  1 11 
Passing. 
-5-  v.  s. 
100 
Sod.  Hypo. 
in  Cubic 
Centimetres. 
Ozone 
(Milli- 
grammes) 
Indicated. 
Ozone 
(Milli- 
grammes) 
per  too 
Litres  of  Air. 
February 
22 
67*824 
8*5 
•15 
'035 
•050 
II  
23 
75-832 
IO" 
•05 
•012 
•015 
*III  
March 
16 
37-026 
8- 
24*5 
'5'85 
15*810 
*rv  
17 
75"4H 
IO" 
20'2 
4-83 
6-40 
*v  
19 
77-612 
9" 
I  I  2 
2-67 
3"45 
*VI  
"  23- 
-25 
194-564 
■ 
57' 
257 
6*14 
3-i6 
In  conclusion,  we  wish  to  say  that  the  assays  are  deemed  of 
as  much  value  qualitatively  as  quantitatively,  the  mere  presence 
of  ozone,  with  a  reasonable  degree  of  constancy,  indicating  an 
atmosphere  free  from  miasmatic  emanations  or  other  impurities 
deleterious  to  life.  At  the  same  time  it  may  be  that  ozone, 
coupled  with  a  mild  and  balmy  climate,  has  some  directly  antizy- 
motic  influence;  in  fact,  the  Michigan  Board  of  Health  reports 
seem  to  indicate  conclusively  that  ozone  and  zymotic  diseases  exist 
in  directly  inverse  ratio. 
Lastly,  our  assays  were  made  without  special  reference  to 
meteorological  conditions,  and  it  is  to  be  hoped  that  further  investi- 
gations, with  these  conditions  in  view,  will  soon  be  made.  Such 
work  the  authors  hope  to  undertake  in  the  near  future. 
Cleveland,  O.,  July, -1900. 
SOME  OF  THE  UNPUBLISHED  RESULTS  OF  THE  INVES- 
TIGATION OF  THE  TANNINS  BY  THE  LATE  PROFES- 
SOR HENRY  TRIMBLE. 
Compiled  for  Publication  by  Josiah  C.  Peacock. 
( Continued  from  page  342. ) 
CUPULIFER^E. 
Castxnea  Pumila. —  A  sample  of  this  tree  secured  from  a  nursery 
near  Philadelphia,  in  March,  1896,  showed  the  following  results: 
Ash  in  Tannin  in 
Absolutely  Absolutely 
Moisture.        Dry  Material.    Dry  Material. 
Root  bark  7-57  5*91  17*18 
Stem  bark  7*03  479  6*36 
