4 BULLETIN 361, U. S. DEPARTMENT OF AGRICULTURE. 
Table 1. — Comparison of bacterial count with Gerber sediment test (unfiltered market milk). 
Sample No. 
Bacteria 
per cubic 
centimeter. 
1 ! 2,690,000 
2 1 1,812,000 
3 i 1,537,000 
4 1 186,000 
5 | 643,000 
Character 
ofsediment. 
Fair. 
Medium. 
Good. 
Bad. 
Medium. 
Sample No. 
Bacteria 
per cubic 
centimeter. 
Character 
ofsediment. 
1,206,000 
108,000 
263,000 
1,803,000 
319,000 
Fair. 
Bad. 
Good. 
Fair. 
Medium. 
In these results it will be seen that some samples had a high bac- 
terial count, yet tested "good" or "fair" with the sediment test, 
while others which had a low bacterial count tested "medium" or 
"bad." 
Plate I, figure 2 (upper), shows two of the samples — No. 7 and No. 1. 
No. 7, having a large amount of sediment and classed as "bad," has 
a low bacterial count, while the other, No. 1, is classed as "fair," and 
has a high bacterial count. 
Table 2 shows the tabulated results obtained by comparing the 
bacterial count with the Wizzard sediment test on 10 average sam- 
ples out of the 50. 
Table 2. — Comparison of bacterial count with Wizzard sediment test (unfiltered market 
milk). 
Sample No. 
Bacteria 
per cubic 
centimeter. 
Character 
ofsediment. 
Sample No. 
Bacteria 
per cubic 
centimeter. 
Character 
ofsediment. 
1 
2,131,000 
622,000 
1,391,000 
812,000 
377,000 
Fair. 
Good. 
Do. 
Bad. 
Do. 
6 
246,000 
3,558,000 
4,102,000 
2,688,000 
243, 000 
Bad. 
2 
1 7 
Fair. 
3 
8 
Good. 
4 . 
9 
Fair. 
5 
10 
Bad. 
It will be seen here that a greater difference occurred than in the 
preceding table. 
Plate I, figure 2 (middle) shows disk No. 8, classed as "good," con- 
taining 4,102,000 bacteria per cubic centimeter, while disk No. 10, 
classed as "bad," contained only 243,000 per cubic centimeter. 
Table 3 shows the tabulated results obtained by comparing the 
bacterial count with the Lorenz sediment test on 10 average samples 
out of 50. 
Table 3. — Comparison of bacterial count with Lorenz sediment test (unfiltered market 
milk). 
Sample No. 
Bacteria 
per cubic 
centimeter. 
Character 
ofsediment. 
Sample No. 
Bacteria 
per cubic 
centimeter. 
Character 
ofsediment. 
1 
768,000 
99,000 
63.000 
57,000 
34,000 
Fair. 
Good. 
Bad. 
Do. 
Do. 
6 
48,000 
27,000 
7,200 
329,000 
49,000 
Fair 
2 
Do 
3 
8 
Do 
4 
9 
Do. 
5 
10 
Good 
