174       Loss  of  Weight  in  Drying  Air-dry  Drugs.  {k\^™;m?"' 
one  hand,  and  excessive  contamination  with  dust  on  the  other  hand. 
Sometimes  two  or  three  experiments  in  drying,  &c,  were  made  in  or- 
der to  satisfy  myself  that  the  results  were  correct. 
In  the  following  tables  the  I  column  for  each  month  indicates  the 
actual  weight  obtained  from  100  parts  of  the  drugs  after  drying  as 
indicated  above ;  the  II  column  shows  the  actual  weight  of  the  same 
material  at  the  end  of  the  month ;  the  difference  between  these  and 
the  first  figures  indicating  the  amount  of  moisture  re-absorbed  during 
the  month.  The  remarks,  Dry,  Wet,  &c,  at  the  head  of  each  column, 
describe  the  weather  on  the  day  the  weight  was  taken  : 
DKUGrb. 
January. 
February. 
March. 
April. 
Mat. 
Junk. 
I. 
II. 
I. 
II. 
I. 
II. 
I. 
II. 
I. 
II. 
I. 
II. 
ui  y . 
Dry. 
Dry. 
Wet. 
Damp 
Dry. 
Show- 
ery. 
Dry. 
Dry. 
ury . 
Wet 
1.  Roots  and  R In 
zornes 
■Colchicum  
88  80 
97-15 
88-20 
96-60 
88-00 
96-00 
88-20 
96-00 
88-90 
96  80 
88-60 
98-50 
89-00 
97-50 
89-60 
98-25 
88-90 
97-15 
89-10 
96-77 
89  50 
97-10 
89  20 
98  00 
88-00 
96-80 
88-00 
97-10 
87-40 
95-80 
88-00 
96-20 
88-20 
96-60 
88  00 
97-00 
Podophyllum ... 
88-80 
97-05 
88-90 
97-30 
87-80 
96-70 
88-25 
96  05 
88-80 
96  60 
88-50 
97-10 
89  20 
97-45 
89  00 
96-50 
87-90 
97-10 
88-20 
96-80 
89-15 
96  40 
89-75 
97-85 
89-55 
97-45 
88-80 
97-30 
88-10 
96-85 
89-10 
96-00 
89-75 
97-25 
89  65 
98  45 
88-75 
97-00 
88-40 
97-35 
87-00 
96-10 
87-90 
96-15 
88-75 
96-90 
88-00 
97-00 
88-00 
96-33 
88-00 
97-80 
86-00 
95  00 
86-40 
95-15 
87-00 
95-40 
86-80 
96-55 
89-10 
97-10 
88-75 
97-85 
87-90 
96-00  88-80 
96-30 
89-00 
96-20 
88-50 
97-00 
2.  Barks. 
Cinchona  rubra 
89-80 
97-30 
89  30 
97-70 
88  10 
96-00 
88-80 
95-20189-00 
95-00 
89-00 
96-90 
Cinnamomum  . 
89-10 
96-98 
89-00 
97-75 
88-00  96-10 
88-50 
96-50 
88-90 
96  00 
88-80 
97-30 
Prunus  Virgin. 
89-67 
97-57 
89-60 
98-00 
88-50  96-70 
89-25 
96-65 
89  20 
96  70 
89-70 
97-70 
89-25 
97-35 
89-00 
97-90 
87-20 
95-00 
89-10 
96-45 
89-00 
94-20 
89-00 
97-20 
3.  Leaves. 
87-00 
95-25 
88-00 
97-00 
86-50 
95-00 
87-00 
95-10 
88  00 
96-00 
87-80 
96-70 
Belladonna  
86-25 
95-25 
87  50 
96-75 
85-60 
94-70 
87-00 
95-20 
88-50 
96-60 
89  00 
97-95 
88-75 
96-45,89-00  97-50 
87-80 
96-30 
89-00 
96-20 
89-25 
96-15 
89-00 
97-75 
Digitalis   
88-00 
96-00' 
88-75197-75 
86-00 
95-00 
87-50 
95-50 
88-50 
95-50 
88-00 
97-00 
Hyoscyamus  
88-00 
96-20  88-00  97-10 
87-20 
95-95 
88-10 
96-30 
88  25 
96-25 
88-20 
97-20 
88-20 
96  00  88  25 
96-65 
86-80 
94-40 
89-00 
96-80 
89-00 
96-25 
89  75 
97-95 
89-67 
97-07  89-00 
97-90 
88-80  97-00189-25 
96  85 
89-20 
96-60 
89-60 
98-35 
4.  Flowers. 
Anthemis  
90  00 
97-10 
89-00 
97-65 
88-40|96-80 
89-25 
96-95 
89-80 
97-10 
89-75 
97-85 
89-75 
97-25  89-20 
97-30 
88-70 
96-37 
89-00 
96-50 
90-00 
97-50 
89-75 
97-70 
5.  Seeds. 
89-75 
97-75  90-00 
98-00 
b8-20 
96-20 
88-80 
96-20 
89-00 
96-25 
89-20 
97-30 
Stramonium.... 
91.40 
98-40|90  00 
97-00 
89-80 
96-70 
89-90 
96-45 
90-00 
96-00 
90-00 
98-00 
