. A biological study of Polypodium polypodioides (resurrection fern) as an air plant in Polypodium; Ferns. 34. the holes thus made on three exposures at the different heights were plugged with tightly fitting corks in order to prevent the accumulation of dust, or animal, or vegetahle matter which might induce decay. On the. Main trunk of Q.,3tellata showing position of instruments at and 3 meters above ground. oak readings were obtained at heights 1,2 meters,3 meters , , and each altitude observations were made on the south,northeast, and nort
. A biological study of Polypodium polypodioides (resurrection fern) as an air plant in Polypodium; Ferns. 34. the holes thus made on three exposures at the different heights were plugged with tightly fitting corks in order to prevent the accumulation of dust, or animal, or vegetahle matter which might induce decay. On the. Main trunk of Q.,3tellata showing position of instruments at and 3 meters above ground. oak readings were obtained at heights 1,2 meters,3 meters , , and each altitude observations were made on the south,northeast, and northwest sides. With the exception of evaporation readings,which were taken only every twenty four hours, the readings of all the other factors were made at nine and eleven o'clock in the morning and two and four in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pessin, Louis Jerome, 1894-. Baltimore, Md.
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherbalti, bookyear1923
