264  United  States  Pliarmacopoeia.  {Amj 
Table  No.  3.— Giving  the  Comparative  Number  and  Classes  of  Preparations. 
1820 
1830 
1840 
1850 
i860 
1870 
1880 
1890 
11 

11 
11 
9 
10 
16 
10 
8 
6 
1 
1 
3 
4 
4 
6 
7 
5 
5 
5 
5 
2 
2 
H 
11 
12 
13 
12 
12 
2 
2 
1 
2 
4 
16 
16 
24 
28 
32 
34 
32 
34 
7 
25 
46 
79 
87 
4 
5 
5 
2 
6 
3 
3 
4 
3 
3 
3 
3 
3 
23 
20 
27 
32 
3i 
3i 
5 
4 
2 
9 
6 
6 
6 
7 
9 
10 
9 
9 
5 
5 
6 
8 
8 
11 
4 
1 
2 
2 
4 
4 
5 
4 
19 
18 
22 
25 
23 
29 
26 
23 
2 
3 
5 
6 
6 
6 
2 
3 
3 
3 
23 
13 
17 
18 
19 
19 
15 
15 
8 
9 
11 
13 
16 
17 
17 
13 
7 
3 
4 
4 
7 
7 
9 
9 
3 
3 
3 
3 
4 
4 
21 
26 
26 
24 
7 
11 
10 
10 
15 
16 
22 
25 
9 
1 
15 
16 
19 
23 
23 
34 
32 
5i 
47 
56 
59 
56 
58 
73 
72 
2 
1 
3 
3 
5 
6 
9 
13 
16 
15 
2 
3 
4 
4 
6 
5 
4 
2 
4 
10 
8 
8 
9 
13 
15 
15 
19 
10 
9 
10 
10 
9 
9 
14 
10 
