Its weight varies from 48 to about 55lb the cubic foot, but in very hard slowly-grown trunks sometimes approaches 60 lb.
The rainfall, which varies between 39 and 47 in.
The construction varies with the site, obviously with a view to the best use of the ground from a strategic point of view.
Hansen showed that the microscopic appearance of film cells of the same species of Saccharomycetes varies according to the temperature of growth; the limiting temperatures of film formation, as well as the time of its appearance for the different species, also vary.
The leaf-stalks and flowerstalks are traversed by longitudinal air-passages, whose disposition varies in different species.