No. 4, February, 1922] AGRONOMY 223 



subsequent loss of the nitrates. Lemmermann also points out that where artificial fertilizers 

 were used no additional effect was shown by the use of stable manure, as would be expected 

 if CO2 influenced the yield. He insists that Bornemann's contention that stable and green 

 manures increase the CO2 content and that this factor is to be credited with the increased 

 yields has not been proved by any accurate experiments. Riedel, an engineer, describes the 

 pronounced effect of CO2 fertilizing in greenhouses, and discusses the possibility of using 

 waste gases as cheap sources of CO2. [See also Bot. Absts. 7, Entries 626, 1304; 8, Entries 

 12, 32; 9, Entry 540.]—^. J. Pieters. 



14G0. BovBT, Pedro A. Apuntes sobre Phalaris bulbosa mata de gramilla dulce. [Notes 

 on Phalaris bulbosa.] Bol. Agric. Provincia Buenos Aires 1^: 3-14. 9 fig. 1920. — Experi- 

 ments were conducted to test the availability of Phalaris bulbosa as a forage crop in the dry 

 and unirrigated sections of the province of Buenos Aires, where the rainfall is less than 310 

 mm. per annum. Seedings failed to live through the dry period, but cuttings were more 

 successful. — John A. Stevenson. 



1461. BovET, Pedro A. Ensajo de cultivo de kafir, feterita y milo (1917-18). [Experi- 

 ments in 1917-18 with kafir, feterita, and milo.] Bol. Agric. Provincia Buenos Aires P: 9-14. 

 2 fig. 1920. — Experiments have been conducted with kafir, feterita, and milo to test their 

 adaptability to the dry conditions prevailing in the province of Buenos Aires. — John A. 

 Stevenson. 



1462. Bruxo, Albert. La toxicite du borax pour les vegetaux. Note critique. [The 

 toxicity of borax for plants. Critical note.] Ann. Sci. Agron. FranQaise et Etrangere 37: 185- 

 190. 1920. — The author briefly reviews American literature bearing on the subject, calling 

 attention especially to the work of Conner [see Bot. Absts. 6, Entry 1381], Schreiner and 

 Skinner [see Bot. Absts. 6, Entry 1431], and their co-workers. He states that their results 

 are contrary to those obtained in various researches in France as shown in the work of Ber- 

 trand and Riviere and Bailhache. Admitting that the method of incorporation of the ferti- 

 lizer in the soil is a factor affecting its toxicity, the author suggests that the Americans made 

 an initial mistake in experimenting only with the Sear les Lake salts, which he thinks may 

 contain some substance more toxic than borax. In conclusion these investigations with borax- 

 containing fertilizers are cited as new proof of the great difficulties confronting investigators 

 of plant physiological problems. — A. B. Beaumont. 



1463. Calvino, Eva Mambli de. Estudios anatomicas y fisiologicos sobre la cafia de 

 azucar en Cuba. [Anatomical and physiological studies of sugar cane in Cuba.] Estac. Exp. 

 Agron. [Cuba] Bol. 46. 49 p., 21 fig. 1921. — The author gives briefly the history of the pro- 

 duction of new varieties of sugar cane from true seed, including the work done to date by the 

 experiment station. The methods originated in Java, India, and elsewhere for obtaining 

 fertile seed are discussed. Varieties Uba, Cristalina, and C291 are described, and histological 

 details by which the 3 may be distinguished are given. Humidity, soil moisture, and other 

 factors which may influence the time of flowering are discussed. The presence of starch 

 grains in the pollen indicates normal condition. Several crosses were made and seedlings 

 grown from the resulting seed. — John A. Stevenson. 



1464. Calvino, Mario. Informe de los aSos 1918-1919 y 1919-1920 de la estacion experi- 

 mental agronomica. [Report of the agricultural experiment station for 1918-1919 and 1919- 

 1920.] Informe An. Estac. Exp. Agron. [Cuba] 1918-1920: 1-786. 329 fig. 1920.— The work 

 reported includes varietal and cultural tests with the following plants: potatoes, maize (native 

 and Mexican varieties), rice, wheat, buckwheat, milo, Eleusine coracana, many varieties of 

 soy beans, Dolichos lahlab, Canavali spp., velvet beans, cow peas, pigeon peas. Pennisetum 

 purpureuni, Meibomia leiocarpa, Tripsacutn latifolium, Paspalum dilatatum, Jxophorus uni- 

 setus, Solanum verbascifolium, Peruvian alfalfa, cotton, tobacco, and sugar cane. Studies 

 were made of the oil-producing capacities of peanut, castor bean, and Salvia hispanica, and 

 the fiber-producing qualities of Meibomia leiocarpa, Spartium junceum, and Hibiscus sab- 

 dariffa var. altissima. — John A. Stevenson. 



