The existence of this pressure has been demonstrated experimentally by W.
Seguin was unable to verify this experimentally, but in 1857 G.
This simple type of life-history has been experimentally proved by Leuckart to be characteristic of Trichocephalus affinis, Oxyuris ambigua and other species.
799.) He advocated and put in practice experimentally Lode.
The effect can also be demonstrated experimentally: thus it has been observed that a xerophyte grown in moist air will lose its characteristic adaptive features, and may even assume those of a hygrophyte.