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TANKAGE. Tankage is prepared from animal refuse secured from slaughter houses and meat markets and may contain considerable and varying amounts of bone. The distinction between meat tankage and bone tankage is not sharply drawn but, in general, tankage with 5 per cent or less of nitrogen and 15 per cent or more of phosphoric acid shows considerable bone and is often sold as bone and meat tankage. As the nitrogen content increases, phosphoric acid becomes less, and in tankage containing over 5 per cent of nitrogen there is generally less than 15 per cent of phosphoric acid, indicating a preponderance of meat. According to definitions established for tankage to be used for feeding purposes, phosphoric acid in excess of 10 per cent is regarded as bone and meat tankage.

Fineness is an important factor in determining the utilization of tankage by crops, particularly in those products containing the higher amounts of bone.

Eighteen samples have been analyzed and analyses are given in Table XII.

Sample 171 was drawn to check the results obtained on 23142. Sample 23021 was sold direct to the user and was reinforced with bone phosphate at the direction of the purchaser.

On the basis of the classification suggested above there are six samples in which the nitrogen is less than 5 per cent and the phosphoric acid more than 15 per cent; in the remaining twelve the reverse is true, i. e., nitrogen is more than 5 per cent and phosphoric acid is less than 15 per cent. In the first group the average nitrogen is 4.14 per cent and the average phosphoric acid is 19.86 per cent, which approaches the composition of bone. The average of quoted prices is $34.79.

In the second group the averages for nitrogen and phosphoric acid are 6.62 and 10.35 per cent respectively, and the average price quoted is $46.99.

GROUND BONE. Twenty-six samples were analyzed and results are given in Table XIII.

The guaranties for nitrogen and phosphoric acid were met in almost all cases, generally with a considerable overage. Two samples which were deficient in phosphoric acid, 23129 and 43, contained excesses of nitrogen which more than balanced the deficiencies.

In fifteen samples 50 per cent or more of the material was finer than 1/50th of an inch, and in five, 60 per cent or more was of that degree of fineness.

Prices quoted ranged from $36.50 to $66.00, the average being $49.72. The averages for nitrogen and phosphoric acid were 3.42 and 24.16 per cent respectively. Allowing 27 cents per pound for nitrogen, phosphoric acid from this source has cost 6.5 cents per pound.

TABLE XI. ANALYSES OF

Manufacturer or Wholesale Dealer.

Dealer or Purchaser.

Station No.

Sampled by Station: 23062 American Agricultural Chemical Geo. S. Phelps & Co., ThompCo., New York....

sonville... 23259 American Agricultural Chemical Co., New York..

J. P. Norton, Broad Brook.... 23017| Apothecaries Hall Co., Water- Šampled at factory, East Windbury:

sor.... 22921 Berkshire Fertilizer Co., Bridgeport.

Sampled at factory..... 22961 Berkshire Fertilizer Co., Bridgeport.

J. E. Lathrop, Burnside....... 23294 E. D. Chittenden Co., Bridgeport.

E. J. Bantle, Glastonbury..... 165 Eastern States Farmers' Ex

change, Springfield ... H. H. McKnight, Ellington.... 22963 L. T. Frisbie Co., New Haven.. T. J. Coleman, Warehouse Point 23262 L. T. Frisbie Co., New Haven.. Sampled at factory .... 138 International Agricultural Corp., Boston.

Chas. Maag, Manchester.. 23418 Nitrate Agencies Co., New York E. N. Austin, Suffield..

40 Olds & Whipple, Inc., Hartford Sampled at factory.. 23426 The Rogers & Hubbard Co.,

Portland. 22987 Sanderson Fertilizer & Chemical

Co., New Haven. 23187 Wilcox Fertilizer Co., Mystic. F. S. Bidwell & Co., Windsor

Locks ....

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Sampled by Purchaser: 21890 Berkshire Fertilizer Co., Bridge- American Sumatra Tobacco Co., port..

Bloomfield.... 21891 21892 21893 21896 21897 21898 21923

Hatheway & Steane, Hartford.. 21924

Hatheway & Steane, Hartford.. 21987

American Sumatra Tobacco Co.,

Bloomfield...... 21988 21989 21990 21991 22198

Hatheway & Steane, Hartford..

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1.29

23062

0.27

23259

1.03

23017

22921

0.19

22961

23

23294

155 22963 23262

138 23418

40

23426

22987

23187

21890 21891 21892 21893 21896 21897 21898 21923 21924

6.51

7.80

8.23

9.48

9.73

6.00

8.01

8.28

8.23

10.07

9.20

6.00

8.02

9.05

8.20

11.00

7.06

5.50

8.21

8.22

9.98

7.88

6.00

7.98

8.17

8.22

9.93

7.93

6.00

0.23

9.05

9.28

8.22

11.28

7.70

4.00

0.83
0.32
0.39

7.43
7.68
7.89

8.26
8.00
8.28

8.23
8.22
8.22

10.04

9.73 10.07

5.70 8.79 7.93

6.40 6.40

0.19
0.59
0.07

6.49
8.25
9.35

6.68
8.84
9.42

6.58
9.04
8.23

8.12
10.75
11.45

7.03
5.25
7.80

7.00
5.03
5.00

0.05

9.68

9.73

9.50

11.83

6.95

0.23

8.30

8.53

8.23

10.37

9.42

6.00

0.88

7.99

8.87

9.04

10.78

7.30

6.00

0.15 0.07 0.07 0.13 0.14 0.08 0.11 0.11 0.12

7.92 8.31 8.47 8.21 8.16 8.34 8.29 8.82 8.61

8.07 8.38 8.54 8.34 8.30 8.42 8.40 8.93 8.73

8.23 8.23 8.23 8.23 8.23 8.23 8.23 8.23 8.23

9.81
10.19
10.38
10.14
10.09
10.24
10,21
10.86
10.61

7.50
7.46
7.54
7.61
7.69
7.37
7.46
7.80
7.77

6.00
6.00

0.15 0.11 0.12 0.12 0.13

8.61
8.73
8.37
8.14
8.48

8.31
8.76
8.84
8.49
8.26
8.61

8.23
8.23
8.23
8.23
8.23
8.23

10.10
10.65
10.75
10.32
10.04
10.47

7.22
6.83
7.02
7.60
7.83

21987 21988 21989 21990 21991 22198

TABLE XI. ANALYSES OF

Manufacturer or Wholesale Dealer.

Dealer or Purchaser.

Station No.

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Sampled by Purchaser: 22212 Berkshire Fertilizer Co., Bridge- American Sumatra Tobacco Co., port. ...,

Bloomfield.. 22213 22386 22387 22388 22389 22390 22441 22462 22722 New England Fertilizer Co., Boston..

W. E. Fiske, Warehouse Point..

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22212 22213 22386 22387 22388 22389 22390 22441 22462

0.10
0.13
0.14
0.08
0.13
0.12
0.14
0.20
0.16

8.62
8.52
8.13
7.97
8.11
7.93
8.05
8.36
8.69

8.72
8.65
8.27
8.05
8.24
8.05
8.19
8.56
8.85

8.23
8.23
8.23
8.23
8.23
8.23
8.23
8.23
8.23

10.60
10.52
10.05

9.79
10.02
9.79
9.96
10.41
10.76

7.51 6.84 6.74 6.79 6.77 6.49 6.56 7.89 7.25

0.08

7.63

7.71

9.37

4.29

22722

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