No. 483] NOTES AND LITERATURE 



203 



An illustrated practical guide to judging and selecting corn is given 

 by Shoesmith in Bulletin no. 139 of the Kansas Agricultural Experi- 

 ment Station. 



An economic account of the cultivation of Agave caninla in the 

 Philippines is given by Edwards in Farmers' Bulletin no. 13 of the 

 Insular Bureau of Agriculture. 



preparation in Africa, in Der Tropenpflanzrr for October. 



Chemical studies of Althusa, Grindelia and Pittosporum, by Power 

 and Tut ill, have recently been distributed as papers from the "Well- 

 come Research Laboratories of London. 



An interesting account of the use of tree bark etc. for bread making 

 is given by Dillingham in the recently issued vol. 3, part 5, of the 

 Bulletin of the Busseij Institution of Harvard University. 



Some good root-habit photographs of Ficus are reproduced in 

 Arboriculture, for October. 



Biffen analyzes Mendel's laws of inheritance with reference to 

 wheat breeding, and the inheritance of sterility in barley, in the recently 

 issued Cambridge volume of reprints from vol. 1 of the Journal of 

 Agricultural Science. 



A second edition of De Vries' "Species and Varieties: their Origin 

 by Mutation," corrected and revised under the editorship of Dr. 

 MacDougal, has been issued by The Open Court Publishing Com- 

 pany. The frontispiece is an excellent but somewhat informal por- 

 trait of the author, at work. 



Further evidence of the germicidal effects of copper is given, in 

 official orthography, by Kellerman and Beckwith in Bulletin no. 100, 

 part 7, of the Bureau of Plant Industry, U. S. Department of Agri- 

 Livingston publishes an important study of the relation of desert 

 plants to soil moisture and to evaporation as Publication no. 50 of The 

 Carnegie Institution of Washington. 



A paper on the effect of tension ii])on the developnient of inechanical 

 tissues in plants, by Ball, is contaiiuMl in vol. 7 of tin- Transartinns of 

 the Texas Academy of Srirnrr. 



From a study of the strength of the bands which Thyridopteryx 

 fastens about twigs, the results of which are published in vol. 17 of the 



