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facility and the valves retain their charge. The lJUmp; I President Morton's investigations into the beautiful phe. bodied the result of his thought. It is needless to add that therefore, seldom requires priming, even when used to raise i nomena of "fluorescence," and also his brilliant discoveries if the student has any inventive genius, this means developes the material a great distance : Tw ? props in front serve to , ' of thalIen<l and petrolucene, we have already described it; and hedoi:10.1038/scientificamerican10251873-256 fatcat:qb2gpdqzhfex3dbjn3ko3kkrfu