If every conceivable precaution is taken at first, one is often too discouraged to proceed at all.

Since, however, it is immaterial whether the work is done by assistants or a machine, I decided to build a machine equivalent to an array of about 200 separating funnels.

Much can often be learned by the repetition under different conditions, even if the desired result is not obtained.

If every conceivable precaution is taken at first, one is often too discouraged to proceed at all.