. Bulletin. Agriculture -- New Hampshire. Fig. 6. Fig. 7. a special bottle or test tube with graduated neck, illustrated in Fig. 5, aud a machine (Figs. 6 and 7) so constructed that the bottles and contents can be enclosed and whirled at a high speed. TAKING THE SAMPLE The pipette is graduated to hold exactly cubic centi- meters of milk, and when well drained will deliver cubic centimeters in the test bottle. No test of any kind can be of value unless one first obtains a perfectly fair sample. Under some circumstances it may be difficult to get a fair sample of milk. On the farm, how
. Bulletin. Agriculture -- New Hampshire. Fig. 6. Fig. 7. a special bottle or test tube with graduated neck, illustrated in Fig. 5, aud a machine (Figs. 6 and 7) so constructed that the bottles and contents can be enclosed and whirled at a high speed. TAKING THE SAMPLE The pipette is graduated to hold exactly cubic centi- meters of milk, and when well drained will deliver cubic centimeters in the test bottle. No test of any kind can be of value unless one first obtains a perfectly fair sample. Under some circumstances it may be difficult to get a fair sample of milk. On the farm, however, there need be no difficulty, but if one has some kuowledge regarding the nature of milk, success will be more certain. Butter fat is found in milk in small particles, or globules (Fig. 8). These globules are so small that they can be seen only b}'^ the aid of a power- ful microscope. The first milk drawn from the udder of a cow contains comparatively few fatty globules, while that milk which is obtained by " stripping" is exceedingly rich in fat. It will be seen that a fair and accurate sample for testing can be obtained only after the milk has been complete^ removed. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Hampshire Agricultural Experiment Station. [Hanover, N. H. ] : New Hampshire Agricultural Experiment Station
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