II. BOTANY AND HORTICULTURE. 377 



cinia mdlvacearum, and probably imported from Chili, where 

 it was discovered on Althcea officinalis. It was first ob- 

 served in the neighborhood of Bordeaux, France, in April, 

 1873, on Malva sylvestris, and extended rapidly to other 

 plants of the same order in the botanic gardens of that town. 

 It appeared in Germany in October, having been found in 

 England in the preceding summer. 12 A, April 16, 1874, 

 470. 



PROPOSED WORK OX AMERICAN FOREST TREEG. 



Dr. F. B. Hough, of Lowville, New York, well known in 

 connection with his efforts looking toward the protecting 

 of American forests from destruction, proposes, should he 

 succeed in obtaining at least two hundred subscriptions, to 

 publish a work which will be of much interest to botanists, 

 microscopists, and workers in wood. This will consist of 

 actual sections of two hundred species of American woods, 

 properly mounted for examination under the microscope, 

 and suitably labeled, to be accompanied by text containing 

 descriptions of the species represented, of their qualities and 

 uses, with other statistical information. The whole will 

 form three small quarto volumes, and the specimens will be 

 prepared by Professor Nord linger, of Hohenheim, who has 

 already been connected with similar publications relating to 

 the forest trees of Europe. 



A NEW W T ORK BY MR. DARWIN. 



Mr. Darwin has lately published in England, under the 

 title of " The Movements and Habits of Climbing Plants," a 

 reprint of his paper on this subject printed some years ago 

 in the Journal of the Linnsean Society of London, which first 

 attracted public attention to the remarkable phenomena 

 connected with the rotation of climbing stems and tendrils. 

 A <rood deal of fresh matter is also inserted. Mr. Darwin's 

 work on "Insectivorous Plants" has met with a large sale, 

 being already in a third edition. Professor E. Morren, of 

 Liege, has published in the Bulletin cle V Academic Eoyale 

 de Belgique a record of a series of experiments which, while 

 they abundantly confirm the insecticidal powers of the 

 leaves of Drosera and Pingiticida, lead him to doubt the 

 power of absorption and digestion assigned to them by Mr. 



