Observations on the Phenomena of Plant Life: A Paper Presented to the Massachusetts Board of Agriculture

absorb absorption agriculture amount animals appears apple attached bark Betula birch branches buds caused cells cent circulation College connection consisting containing covered crops DATE detached developed diameter direction drops earth eight elaborated entirely exhibited experiments fact feet of water fifty figure five flow force four fruit furnished gauge girdled grape grew ground growing growth hundred inches increase Japan Japanese June land layer leaves length less living lower material maximum means mercurial gauges minute month nearly observations obtained ounces pear pine plant portion pounds pressure produced quantity red maple regard removed roots sap-wood season seed seen shows side soil sometimes species specimen spring squash stem suction sugar maple surface tendrils thousand tissue tree trunk tube upper usually variation vegetable vine wood young