[August 3, 1905]
end of a long petiole hanging down, back to back, perfectly straight. As striking, in some ways but not so conspicuous as a sleep plant is Postierier hygrometrica. These last two in the garden.
The garden we did not examine fully, but the most interesting part consists of beds showing their relation to their environment, that is to say the beds are physiological and illustrate some particular relation. One bed has sleep plants, one bed plants showing adaptations against cold, another bed aquatic plants showing their relation to water and light, another showing plants of salty
August 3, 1905
soils, another alpine and arctic plants, another carnivorous plants, another showing variations in a single generation, also beds for fasciation, color forms in leaves, color forms in flowers, zygomorphic and actinomorphic flowers in the same species, and so on through a great variety of beds. It is certainly the finest demonstration garden for popular instruction that I have seen and is certainly useful also for student work for which latter purpose I judge it must also be use. The free University of Brussels occupies building in that quarter of the town where the picture galleries and royal