Some Hourly Observations of Tree Growth

Some Soil Factors Affecting Tree Growth.

(1) It becomes increasingly evident that continued root growth with the establishment of new root-soil contacts is necessary for the normal entrance of both water and mineral nutrients into the root. This concept emphasizes the ecological importance of factors tending either to impede or favor the spread and permeation of roots in the soil. (2) The characteristics of soils with respect to (1) a...

Some Observations on the Political Economy of Population Growth

Located in the lobby of the Department of Commerce building in Washington is a large display showing the estimated size of population of the United States. Every few seconds, another addition is recorded; in the spring of 196o, the estimate reached i8o,oooooo, a number that, if borne out by the census, means that more than 30,000,000 people have been added in the past decade. On a planetary sca...

Some observations on growth and development of Macaca mulatta.

Introduction T h e normal diet and growth patterns of most animals are so far removed from man as to make extrapolation of data across species boundaries a difficult, if not impossible, exercise. T h e phylogenetic argument that subhuman primates are evolutionarily nearer man does not necessarily mean that they are the most useful as animal models. T h e nutritional requirements of laboratory m...

Some observations on the feeding of the guinea pig

Some Observations on Dirac Measure-Preserving Transformations and their Results

Dirac measure is an important measure in many related branches to mathematics. The current paper characterizes measure-preserving transformations between two Dirac measure spaces or a Dirac measure space and a probability measure space. Also, it studies isomorphic Dirac measure spaces, equivalence Dirac measure algebras, and conjugate of Dirac measure spaces. The equivalence classes of a Dirac ...