Contributions in geographical exploration . Photograph by D. B. Church THE SAME STATION A YEAR LATER. August 27, 1916. Seventeen seedlings of lupine had come up, also several grass seedlings. The clumps of grass outside the fence which prove to be Deschampsia ccespitosa have fruited but are not much extended. Nov., 1918] Recovery of Vegetation at Kodiak 23 in determining the character of the vegetation in the station,which, before the eruption, was occupied by a typical arctic-alpine heath. Instrumental records giving comparative hourlyevaporation rates in such stations and the lowland wouldbe
Contributions in geographical exploration . Photograph by D. B. Church THE SAME STATION A YEAR LATER. August 27, 1916. Seventeen seedlings of lupine had come up, also several grass seedlings. The clumps of grass outside the fence which prove to be Deschampsia ccespitosa have fruited but are not much extended. Nov., 1918] Recovery of Vegetation at Kodiak 23 in determining the character of the vegetation in the station,which, before the eruption, was occupied by a typical arctic-alpine heath. Instrumental records giving comparative hourlyevaporation rates in such stations and the lowland wouldbe of great interest. More significant than the differences between the differenthabitats is a comparison of the evaporation rate of the regionas a whole with that of other regions. Unfortunately, how-ever, comparable data are very scanty. Briggs and Shantz. Photograph by R. F. Griggs THE SAME STATION TWO YEARS LATER. September 12, 1917. All but one of the lupines winter killed but many new ones have started. Many clumps of Agroslis hiemalis. Old clumps of grass much enlarged. have shown^ that records of the different types of instrumentsemployed for measuring evaporation are not closely porous-cup atmometers of the general type used inthe present investigation, have been employed for a numberof years in ecological research, it is only recently that theinstrument has been sufficiently perfected to correct the errors Briggs, L. J., and Shantz, H. L. Comparison of the Hourly Evaporation ofAtmometers and Free Water Surfaces with the Transpiration Rate of Medicagosativa. Jour. Ag. Research 9: 277-292. Pis. 4-6. 1917. 24 The Ohio Journal of Science [Vol. XIX, No. 1, incident to exposure under different climatic conditions. Theinstruments we used were of the non-absorbing or rain-prooftype, but tlie new spherical cups had no
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