Contributions in geographical exploration . ief interest in this zone lies, not inthe death of those plants which perished, but in the circum-stances surrounding the survival of the few that persist. Forthese not only bear upon our original problem, that of rcveg-etation, but also throw some interesting side lights on thecharacter of the eruption. Inasmuch as the area near the volcano was not visited untilthree years after the eruption, the observations concerningthese survivals were perforce made on j^lants whicli had begun 186 The Ohio Journal of Science [Vol. XIX, No. 3, to recover. The dat
Contributions in geographical exploration . ief interest in this zone lies, not inthe death of those plants which perished, but in the circum-stances surrounding the survival of the few that persist. Forthese not only bear upon our original problem, that of rcveg-etation, but also throw some interesting side lights on thecharacter of the eruption. Inasmuch as the area near the volcano was not visited untilthree years after the eruption, the observations concerningthese survivals were perforce made on j^lants whicli had begun 186 The Ohio Journal of Science [Vol. XIX, No. 3, to recover. The data are, therefore, somewhat complex,including, beside the effects of the eruption proper, secondaryeffects partly direct consequences of it and partly subsequentrestorative reactions of the plants. It will be advisable, first,simply to describe the present condition of the vegetation,after which some attempt may be made to analyze the datawith a view of ascertaining what occurred in the eruption andwhat reactions the plants have made Photograph by R. F. GriggsIN MANY CASES LARGE TREES PERISHED WHERE SMALL ONES text page 199 for explanation. Jan., U)1.)J Effects of the Eruption oil W-uctation 187 PRESENT CONDITION OF SI K\1\IN(, 1 Because of the difference in the habit of growth, the sur-vivals among the various species of trees show quite differentdegrees of injury. Balsam poplars {P. caudicaus)* were theonly large trees. All of the growing parts and all of the ordinarybuds of these were killed; but some of the dormant deep in the thick bark of the large branches, survivedand have grown out forming short, bushy brushes, which givethe trees a most outlandish appearance. (See page ISo.) In some places it may be seen that the smaller trees survivedwhere the taller ones, standing beside them, perished. Thetaller trees were, of course, more exposed, and j)rotected thesmaller to a certain extent, but it is not obvious at first whytheir own lo
Size: 1189px × 2101px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishercolum, bookyear1920
