BOTANY. 929 



ness, and crude protein was formed in about the same proportion. There appeared 

 to be a direct relation between the intensity of respiration and the production of 

 crude protein. 



Influence of light on the aldehyde content of green leaves, J. Reinke and 

 E. BraunmCller (Ber. Dent. Hot. Gesell., 17 (1899), No. l,pp. 7-12).— The aldehyde, 

 which exists as condensation products in leaves, was found to be more abundant 

 when the specimens had been kept for sometime in the light. 



Soil evaporation and plant transpiration, W. Maxwell (Landio. Vers. Stat., 51 

 (1898), Xo. 2-8, pp. 205-220).— -This article has already appeared in the Journal of 

 the American Chemical Society (E. S. R., 10, p. 721). 



The influence of rain upon sugar cane, H. Bruning ( Tropenpflanzei; 2 (1898), Xo. 

 12, pp. 363-365, figs. 2). 



On the function of hydrocyanic acid in plants, M. Soave ( Ann. Farm., 1898, 

 p. 481). — Experiments with sweet and bitter almonds. 



On the utilization by the plant of the phosphoric acid in the soil water, T. 

 Sciiloesing (Jour. Soc. Agr. Brabant-Hainaut, 1S9S, Xo. 50). 



The significance of silicic acid in plants and its relation to lodging of cereals, 

 V. von Swiecicki (Die Bedeutung der Kieselsdure als Bestandtheil der Pflanzen und Hire 

 Beziehungen zum Lag em des Getreides. Halle, 1898, pp. 45). 



The poisonous effects exerted on living plants by phenols, R. H. True and 

 C. G. Hunkel (Bot. Centbl., 76 (1898), Xo. 9, pp. 289-295; 10, pp. 321-327; 11, pp. 

 361-368; 12, pp. 391-398). 



Biological studies on Alinit, J. Stoklasa (Centbl. Baht. u. Par., 2. AM., 4(1898), 

 Xo. 12, pp. 507-513; 13, pp. 535-540). 



The morphology and biology of the denitrification bacteria, H. Jensen (Centbl. 

 Bait. u. Par., 2. AM., 4 (1S98), Xo. 10, pp. 401-411; 11, pp. 449-460, figs. 8). 



Symbiotic saprophytism, D. T. MacDougal (Ann. Bot., 13 (1899), Xo. 49, pp. 1-47, 

 pU. 2, fig. 1). — This work was intended to extend the knowledge of the occurrence 

 of mycovrhiza, the physiological relation between the two syrnbionts, the influence 

 of inycorrhizal arrangement upon the development of the higher plant, and the 

 experimental formation and variation of such structures. Ten species of hemisap- 

 rophytes, 1 holosaprophyte, and 4 autophytes were studied. 



On the relation which exists between the evolution of certain organs in the 

 fungi and in phanerogams, Boudier (Compt. Rend. Congress Soc. Savantes, 1898, pp. 

 149-167). 



The effect of ethereal oils on fungi, T. Bokorny (Arch. Physiol. [Pfluger], 

 73 (1898), p. 555). 



Contributions to the biology of Penicillium glaucum, F. Gueguen (Bui. Soc. 

 Mycol. France, 15 (1899), Xo. 1, pp. 15-36, pi. 1).— Notes are given on the effect of 

 various fungicides on Penicillium glaucum and cytological studies on the same. 



On the presence of a soluble proteo-hydrolytic ferment in mushrooms, 

 E. Bourquelot and H. Herissey (Bui. Soc. Mycol. France, 15 (1899), Xo. 1, pp. 60- 

 67). — Notes the presence in a number of mushrooms, as well as in Aspergillus niger, of 

 a ferment capable of digesting casein. 



On the presence of emulsin in lichens and fungi, H. Herissey (Bui. Soc. Mycol. 

 France, 15 (1S99), Xo. 1, pp. 44-48). — Notes the presence of emulsin in a number of 

 lichens and fungi in which it had not been previously observed. 



The scientific preservation of mushrooms and the localization of the toxic 

 principle in them, E. Prothiehe (Compt. Bend. Congress Soc. Savantes, 1898, pp. 

 212-217). 



Methods in planktology, G. W. Field (Bhode Island Sta. Bpt. 1897, pp. 120-149, 

 pis. 3).— The author describes the different methods adopted for collecting the 

 organisms from water and points out some of the sources of error in different 

 machines. A bibliography on the subject is also given. 



The Point Judith pond, G. W. Field (Bhode Island Sta. Bpt. 1897, pp. 117-119, 



