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.
For cells in which the electromotive force varies with temperature, the full equation given by Gibbs and Helmholtz has also been confirmed experimentally.
It is found experimentally that the Lorenz and Lorentz function holds fairly well, and better than the Gladstone and Dale formula.
