of valuable information contained in his new book, not rolla of Nicotiana lon r; iflor a, is rich in starch �rains, the least useful contribution to botanical science in re-but neither here nor m Phtladelphus has theIr con· cent years is this seemingly negative research. It is Lsumption the slightest influence on the s . melL of the well known that the reputation of this investigator has I flowers; in th� latter pla!lt flowers WhICh already heretofore rested mainly upon his minute and exact

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... l never entIrely lose theIr scent when placed In the acquaintance with the anatomical details of plants. dark. . . . As a result of this we find that the numerous convinc-I ExperIments were also mad� on the re!a�IOn betwe�n ing physiological experiments that have been per-respiratioI?-and the scen� In Nyc�ennw capensts. formed are stamped with a special character, and once Shoots . w l th the normal mght-smellmg �owers, when more bear out the exceptional value of a thorough placed In an atmosphere of hydrogen, ne. lther opened and systematic training to those who would master nor smelt' ; the effect was somewhat pers l s�ent, as the nature's secrets.-Pharmaceutical Jour. flowers when removed from the hydrogen dId not open OBSERVATIONS ON THE SCENT OF FLOWERS. IN the" Acta Horti Petropolitani," vol. xi, p. 383, Robert Regel gives an account of some observations made at St. Petersburg on the relation of the smell of flowers to external conditions. The relation is an evi dent one, but is not the same in different plants. Plants whose flowers smell during the day have a much more intense odor in warm than in cold, dull weather; thus the mignonette and sweet pea have a much stronger smell on a hot clear day, and flowers of Platanthera bifolia grown in open places are more scented than when sheltered in woods. Flowers of