Botanical gazette Volume 55

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...leaf blade soon show a deficiency in starch content, and that when the stomata are closed with cocoa butter starch formation does not occur. Further it appears that shoots free from starch soon showed the presence of that substance if placed in sunlight in an atmosphere containing CO2, but controls, also in sunlight but in an atmosphere without C02, showed no starch. Support is also given to the contention that many of these plants receive no carbohydrates from their hosts by the fact that they will thrive as root parasites upon annuals which have no starch or sugar stored in their subterranean organs.--Geo. D. Fuller. Phosphorescence in plants Molisch has issued a second and enlarged edition of his work on phosphorescing plants. The book is very simply and interestingly written, and brings up to date his own extensive work in this field as well as the work of all other investigators. The first chapter answers negatively the question "are there phosphorescing algae?", and shows that such appearances are due to light reflection or to animals living on the algae. The second chapter gives the evidence for the existence of phosphorescence in marine Peridineae and for its absence in fresh water forms. The third chapter deals at length with the phenomenon in fungi, both Hyphomycetes and bacteria, and the fourth shows the relation of salts and temperature to the light production in bacteria. The fifth treats of the nutrition, phosphorescing, and growth of the light-producing fungi, and the sixth with the manner in which light is produced. Phosphorescence is an oxidation process demanding a minimal though very small partial pressure of oxygen. There is no convincing evidence for any direct relation between respiration and phosphorescence, much...