AMERICAN INSTITUTE. 335 



Motscliussky appears to be a perfect enthusiast in the science 

 of insects, and we Icnow how to value such noble efforts to gain 

 knowledge in a matter deeply affecting our bread, wine and oil. 

 Toy, by a thorough knowledge of those destructives of our great 

 necessaries we may prevent it. 



[Journal do la Soeietc Imperialo ct Centralc criTorticulturc, Napoleon Sd, Protocteur, 

 Paris, August, 1867.] 



CHINESE YAM, {Dioscorea Batatas. 

 ExperiniC7ital Garden of the, Society. 



The Iraperiale and Central Society of TL>rticulture, penetrated 

 by a sense of the importance in garden culture, and perhaps in 

 farm culture, of this new tuber, has appointed a committee of 

 three members to examine the subject. This committee, in order 

 to gain all information and be enalded to give true knowledge 

 of it, has commenced the examination as to its success in all 

 France. 



Here follows a list of questions : 



BAD EFFECT OF GREASE OR TxiR ON TREES. 



A tree whose bark is covered wi(h it, in its whole length, 

 from the ground to tlie branches, grows feebly. Some young 

 trees, covered about one-third of the trunk, do not mind it. 



Trees with a circular coating of about a hands' breadth do 

 not suffer at all. 



Schamal, of Prussia, puts cloth bandages, wet, around the trunks, 

 limbs &c., of those nut-trees which exude gum. On removing 

 the bandages he finds the gum absorbed by the wet, chiefly. 

 He then, with a brush and water, cleans the gum places thor- 

 oughly. This must be done soon. 



[Bulletin mensuel de la Societe Imperialo Zoologique d' Acclimatation, Paris, August 1857.] 



Extracts translated by Henry Meigs. 



Experiments on acclimation of plants, at Moscow, by Nicholas 

 Annenkow, director of the botanical committee of acclimation, 

 of the Russian Horticultural Society, and of the agricultural 

 school of Moscow. 



The e?sa3-s at Acclimation of plants, in Russia, are not new, 

 for efforts have long been made to introduce new ones, especially, 



