This simple type of life-history has been experimentally proved by Leuckart to be characteristic of Trichocephalus affinis, Oxyuris ambigua and other species.
They can also be effected experimentally.
Steel sleepers were used experimentally on the London & 'Forth-Western, but were abandoned owing to the shortness of their life.
It is found experimentally that the Lorenz and Lorentz function holds fairly well, and better than the Gladstone and Dale formula.
The quinonoid structure of many coloured compounds has been proved experimentally, as, for example, by Hewitt for the benzene-azo-phenols, and Hantzsch for triaminotriphenyl methane and acridine derivatives; but, at the same time, many substances cannot be so explained.
