IN a study2 of the distribution of vegetation in Kent county, Michigan, made by the author
several years ago, the tentative conclusion was reached that the controlling factor in the …

All farmers recognize the relation existing between the timber and the soil (which must result
in most cases from the underlying rock), as is evident fiom the expressions which they use in …

This paper is an attempt to present data on the relative value of different factors operating to
determine edaphic formations on certain soil types. In order to define the plant communities …

While so much is known about grass-land vegetation, our knowledge of the relations
existing between the weeds of arable crops and the soil on which they grow is more or less …

SOME CHENOPODIACEAE. PROBABLY the most characteristic plants of the great saline
plains of the West and the similar basins of the intermountain country are the …

THAT many plants growing typically in the peat bogs of the northern United States and
Canada exhibit the same structural characters as do those occurring in very dry soils of the …

1. Soil types found in Pike and Calhoun counties at the lower end of the Illinois River were
correlated as far as possible with the plant communities growing upon them. The soils in the …

The report here outlined was presented at the Minneapolis meeting of the American
Association for the Advancement of Science (1910). The survey of the vegetation was …

1. Genetic synecology is that part of ecology which deals with the developmental relations of
plant communities. In a limited region the development of successions (seres) is definitely …

WHEN we consider the bog as a habitat for plants, there is at once brought to mind the
marked contrast between its characteristics and those of the other plant habitats of its …