If every conceivable precaution is taken at first, one is often too discouraged to proceed at all. Archer John Porter Martin conceivablediscourageprecaution Change image and share on social
Much can often be learned by the repetition under different conditions, even if the desired result is not obtained. Archer John Porter Martin conditiondesirelearn Change image and share on social
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. Archer John Porter Martin arrayassistantbuild Change image and share on social
