NITROGEN CHANGES IN STORED ALCOHOLIC EXTRACTS OF PLANT TISSUES

compiler as coimipared with MALPIGiIL aIid HALES; alnd his biographer, Du PETIT-THOUARS, says that lhe lacked the ability to distinguish between matters of secondary and those of fundamental importance. At the age of fifty, DUHAAMEL was comlsidered one of the most learned men of Europe. His ardor for study never diminislhed, but he slowly took on the weight of years anid was denied the power to carry on the further scientific work which he had planned. He was honored by being made a member of the Royal Society of London and Dean of the Academie des Sciences before his death. He died in Paris on the 13th day of August, 1782, following a stroke of apoplexy. CONDORCET says of him, "His course, useful, glorious, and peaceful, is one of the happiest that the history of science is able to present. "-WARREN W. CHASE, Division of Forestry, University Farmn, St. PaWl, Minn.