552 Value of Artificial 3Ianures. 
Analyses of Superphosphate of Lime — continued. 
No. 
of 
Sample. 
Moisture. 
Organic 
Matter 
and Salts 
of Am- 
monia. 
Sand, &c. 
Biphos- 
pliate of 
Lime. 
Eqtial 
to 
Soluhle 
I'hos- 
phate. 
Insoluble 
Plios- 
phate. 
Il.ydrated 
Sulphate 
of Lime. 
1 
Alkaline j 
Salts, j 
i 
Nitrogen. 
Equal 
to Am- 
monia. 
154 
10 
05 
0 
39 
8- 
18 
7 
80 
11 
50 
13-08 
57- 
60 
2-90 
0- 
13 
0*16 
155 
18 
42 
0 
50 
4" 
19 
11 
42 
16' 
84 
12-72 
47 
77 
4-98 
0- 
15 
0-18 
156 
26 
78 
17 
10 
4- 
60 
7 
54 
11 
13 
12-51 
•47 
0- 
92 
1-11 
157 
10 
80 
38 
75 
7 
42 
10 
91 
16- 
10 
1-23 
30 
■ i 
-89 
2- 
21 
2-67 
158 
18 
67 
15 
23 
6 
98 
5 
20 
7 
67 
19-10 
34 
-82 
1- 
44 
1*73 
159 
11 
30 
7 
59 
8 
20 
10 
09 
14 
89 
14-34 
42 
34 
6-14 
0- 
52 
0-63 
160 
10 
66 
J 1 
89 
25 
58 
37 
72 
50 
28 
-« '«o 
0" 
44 
0"53 
161 
15 
25 
9 
25 
8 
22 
3 
80 
5 
61 
6-21 
46 
24 
11-03 
0 
87 
1-05 
162 
14 
72 
14 
74 
4 
38 
11 
34 
16 
72 
5-64 
40 
17 
9-01 
1 
35 
1-64 
163 
20 
94 
29 
34 
5 
69 
6 
98 
9 
30 
7-63 
22 
56 
6-86 
1 
62 
1-96 
164 
13 
48 
10 
70 
9 
93 
3 
58 
5 
28 
6-31 
37 
64 
18-30 
0 
45 
0-55 
165 
22 
29 
11 
33 
13 
41 
4 
01 
5 
92 
4-83 
36 
67 
7-46 
0 
55 
0-67 
166 
13 
12 
7 
60 
5- 
39 
16 
27 
23 
99 
11-02 
46 
35 
0-25 
1 
10 
1-30 
167 
14' 
38 
13 
80 
4 
18 
9 
51 
14 
03 
10-57 
45 
94 
1-62 
2 
94 
3-57 
168 
3 
63 
25 
00 
7- 
83 
7 
89 
11 
64 
13-14 
'~42 
1 
34 
1-62 
169 
7 
55 
4 
50 
2 
55 
17 
29 
25 
50 
25-01 
38 
37 
4-83 
0 
•19 
0-23 
170 
20 
06 
11 
97 
7 
33 
9 
86 
14 
55 
5-62 
30 
60 
8-56 
171 
16 
19 
23 
80 
3 
14 
9 
09 
13 
41 
8-90 
25 
88 
13-00 
3 
03 
3-68 
It would be useless to attempt to deduce from these very 
differing figures any mean number for the composition of super- 
phosphate of lime, but we may arrive at important results in 
another way. 
Tlie proportion of soluble phosphate of lime and of ammonia 
being, as we have before said, of the principal importance, we 
may see what is the general nature of the samples in reference 
to these ingredients. 
Of 171 specimens in the table, there are — 
Containing — - 
Less than 5 per cent, of Soluble Phosphate 1 1 samples, or 6^ per cent. 
Between 5 & 10 ,, 49 , , or 29 ,, 
10 & i5 ,, 60 or 35 
,, 15& 20 ,, ,, 40 , , or 23 ,, 
Over 20 ,, ,, 11 , , or 6j ,, 
It will be observed that the number of samples containing less 
than 5 per cent, of soluble phosphate is very limited, being only 
6 per cent, of the whole number examined. It is right that I 
should mention that I have omitted from the table some samples 
which have been sold as " turnip manure," and have contained 
little or no soluble phosphate of lime. It is obvious tliat any 
mixture of rubbish may be sold as a turnip manure, and however 
much the buyer may in reality be defrauded by such a purchase 
it is not fair to consider those samples as " superphosphates of 
