Am.  Jour.  Pharm.  \ 
August,  1902.  J 
Drops  as  Dose  Measures, 
377 
number  of  drops  in  a  fluid  drachm."  In  addition  to  this  we  find  in  The 
American  Journal  of  Pharmacy  alone,  drop-tables  by  J.  J.  Ber- 
nouilly,  1859,  page  442;  Barnard  S.  Proctor,  i860,  page  430 ;  S.  L. 
Talbot,  1880,  page  337,  and  A.  H.  Kinsey,  1884,  page  181. 
In  view  of  the  fact  that  drop-tables  have  been  incorporated  in 
many  of  the  pharmaceutical  textbooks,  and  are  considered  as  being 
more  or  less  authoritative,  it  will  probably  be  of  more  than  passing 
interest  to  compare  the  essential  features  of  a  few  of  these  different 
tables,  with  a  view  of  determining  whether  or  not  any  general  deduc- 
tions may  be  drawn  from  them. 
TABLE  NO.   I.— GIVING  THE  NUMBER  OF  DROPS  OF  DIFFERENT  SUBSTANCES 
NECESSARY  TO  WEIGH  ONE  GRAMME  ACCORDING  TO  THE 
AUTHORS  QUOTED. 
Author. 
Published  in  or 
quoted  by 
Water. 
Alcohol. 
Ether. 
Chloroform. 
Fowler's 
Solution. 
Tincture  of 
Digitalis. 
Wine  of 
Opium. 
Durand 
Ellis'  Formulary 
13 
49 
59  • 
■  17 
35 
22 
Bernouilly 
A.  J.  P. 
14 
39 
53 
33 
18 
Hager 
Hager's  Handbook 
16 
40 
50 
25 
16 
25 
20 
Dorvault 
I/Officine 
20 
59 
76 
54 
23 
58 
34 
Talbot 
U.  S.  Dispensatoi-y 
16-5 
51 
69 
48 
16 
37 
28 
Raymond 
Druggists  Circular 
20 
61 
90 
56 
23 
53 
33 
Deaman 
Meyer  Bros.  Druggist 
28 
80 
107 
76  . 
35 
63 
44 
Eschbaum 
Ber.  Der.  Pharm. 
Gesellschaft 
10 
33 
42 
26-5 
Harnack 
Proc.  G.  Ph.  A. 
14 
4i 
47*5 
33 
21 
34 
23 
Eschbaum 
Ber.  Der.  Pharm. 
Gesellschaft,  1902 
I3'8 
45 
57 
37 
22 
37 
21 
Wilbert 
With  Fixed  Dropper 
10 
30 
41 
28 
I9'5 
Wilbert 
Dropping  Bottle 
10 
42 
60 
44 
15 
31 
23 
Table  No.  I  will  give  us  a  very  fair  idea  as  to  the  reliability  of 
these  various  drop-tables.  It  will  be  noted  that  the  quantities  given 
are  all  figured  out  for  the  number  of  drops  that  are  required  to 
weigh  1  gramme;  this  has  been  done  to  facilitate  comparison.  The 
tables,  according  to  Durand  and  Talbot,  have  been  calculated  accord- 
ing to  the  weight  of  a  drachm  of  the  respective  preparations  in 
grammes,  as  given  in  the  later  editions  of  the  United  States  Dis- 
pensatory. The  table  by  Bernouilly  was  based  on  the  number  of 
drops  required  to  weigh  a  drachm,  and  this  in  turn  was  calculated 
