NOTES ON RECENT RESEARCH. 



719 



forcing, when, although the rot will develop abundantly, it will involve no 

 serious risk to the young growths. 



These experiments do not stand alone. Subsequently, in a paper read 

 at the Academy on July 29, 1901, M. Julien Roy demonstrated the pos- 

 sibility of attenuating the virulence of other parasitic micro-organisms, 

 such as the rusts and smuts of cereals &c. In another direction, 

 according to Dr. Charron, outside the specific toxines of pathogenic 

 microbes there are a number of other applications, organic serums or 

 mineral saline solutions, which may modify the nutrition of the plants, 

 and in this way produce a more or less complete immunity against con- 

 tagious diseases.— C. T. D. 



Anatomy of Yicue. 



Viciae, Anatomy of. By Otto Sfcreicher (Beih. Bot. Cent. bd. xii. 

 ht. 3, pp. 483-538). — Herr Otto Streicher has examined 105 species 

 belonging to the six genera of this tribe of Leguminosce. Like other 

 leguminous tribes, there are characteristic stalked hairs. Calcium oxalate 

 occurs only in the form of large single crystals and their derivatives, or 

 sometimes as small prisms or granules. The multicellular stalked external 

 glands are characteristic ; so also is the presence of mechanical tissue in 

 the nerves. Tannin-idioblasts, and mucilaginous modifications in the 

 epidermal cells, do not occur. There is no special or peculiar arrange- 

 ment of the cells next the stomata. The pericycle in Cicer contains 

 isolated bast fibres ; in Abrus there is a continuous ring of sclerenchyma. 

 Cork develops from the inner part of the primary rind in Cicer, but from 

 the "rind-epidermis" in Abrus. The author concludes that Abrus 

 differs decidedly from the other Vicice in anatomical structure, and appears 

 to doubt if it should remain in this family. — G. F. S.-E. 



