GENERAL ANALYTICAL PROCESSES.

=6. Taking Samples.=—It is impracticable to give definite directions

for taking samples of fertilizers which will be applicable to all kinds

of material and in all circumstances. If the chemist himself have

charge of the taking of the sample, it will probably be sufficient to

say that it should accurately represent the total mass of material

sampled. Generally the samples which are brought to the chemist have

been taken without his advice or direction and he is simply called upon

to make an analysis of them.

[Illustration: FIGURE 1.

Principles and practice of agricultural analysis. Volume 2 (of 3), Fertilizers · 第 12 / 71 题