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The article presents a study on the light reaching the ground vegetation in the high forest phase and its relation on the differences in forest structure of two selected sites, where one is on the slopes of Mount Andes and the other is at the extreme western edge of the Amazon basin. The authors state that their observations and analysis have enabled them to associated some of the differences between the two forests with differences in light climate. They mention that the interactions between light and other factors, specially root competition, may be very important. They believe that future studies on light as an ecological factor in tropical forests will most productively be aimed to the reaction of individual species to light at various stages of growth.

The primary purpose of this study is to examine the effects that the acreage aspects of the cotton programs have had upon movements of farm labor in the majority of the chief cotton-growing states of the South. A study along these lines is justified and needed on several counts. First, migration is an important avenue of labor-force adjustment in agriculture, perhaps more so than in most industries since occupation and place of residence are so closely related. Second, cotton acreage controls have constituted an 4 In addition to those already cited, see Walter Wilcox, "The Farm Policy Dilemma," Journal of Farm Economics, August 1958, pp. 563-571; and E. L. Baum and Earl O. Heady, "Some Effects of Selected Policy Programs on Agricultural Labor Mobility in the South," Southern Economic Journal, January 1959, pp. 327-337. important part of the federal farm programs since 1933 and are likely to continue to be important. Finally, cotton is one of the most labor intensive of all crops. The effects of these programs with respect to labor-force adjustment through migration need to be more clearly understood.[5]
The paper may be concluded rather briefly with the observation that the results of this analysis have not been consistent with the usual claim that the farm programs over the last three decades or so have tended to hamper movements of labor from farming. They have on the contrary tended to bear out the hypothesis that the net effect of the acreage aspects of the programs has been to speed up movement from farms. [ABSTRACT FROM AUTHOR]

The article discusses the occurrence of Salix humboldtiana in temperate South America at or near the latitude of Buenos Aires. It is cited that Lucien Hauman refers to the occurrence of the genus as a riparian shrub in the Monte, where the vegetation is xerophilous. It is mentioned that the occurence of this willow is as far south as the lower reaches of the River Chubut. It is said that the river is approximately 44 degrees of south latitude, 9 degrees farther south than Cape Agulhas in South Africa.

The article provides an overview of the study "Versuch einer Uebersicht der siphonogamen Polsterpflanzen," by H. Hauri and C. Schröter published in the 1914 issue of "Engler's Botanische Jahrbuch." In this article, a list of the known phanerogamic cushion plants and their general characteristics are presented. An analysis of the plants' geographical distribution revealed that half of the species grow in South America and New Zealand. In Europe and Asia, these plants are confined to the mountains.

The article discusses the ecological and floristic convergence of some plant formations in South America. The author considers certain traits of flora, vegetation and climate as a first approximation to compare corresponding ecosystems. The comparative analysis may be viewed at three different approaches. The first is the assessment of the degree of environmental similarity under which similar types occur. The second concerns the structural and functional convergence of vegetation. The third approach focuses on a morpho-ecological characterization of each of the communities through their main plant components.

The article discusses a study on resource utilization and situational factors contributing to the ineffective use of human capital. Research on resource management at various levels, including the board of directors, is mentioned. Two theoretical constructs--business infra-structure and situational congruence--explain the misapplication of managerial skills. Human resources are wasted because skills are not matched to the appropriate socio-technical system or they are not being applied at all due to social, psychological or structural barriers. Statistics for the use of shorthand and typing skills and the dictating habits of managers in South American companies are given, as well as the use of pre-meeting agendas.