HOETICULTURE. 47 



Applying' phosphatic manure to sugar beets in the row (Deal. Lamhr. Presse, 

 27 {1900), No. 38, p. 472). — The yields of sugar beets -were considerably increased 

 when fertilizers were applied in the seed row over applications made broadcast. 



Influence of increasing quantities of phosphoric acid and nitrogen in the 

 culture of sugar beets, A. Damseaux [Bal. A(jr. [7>)v'.w'/.s-], 15 (ISPO), Xo. 7, pp. 010- 

 618). — Applying more than 700 kg. of superphosphate or 500 kg. of nitrate of soda in 

 tliese tests was not iirotitable. 



Sugar cane: Culture, manufacture, and statistics, W. Tiemann (Zuckerrohr: 

 Knit ai;Fabrikat tun, unci Stati.'iiik. BcrUn: DeutscJier kolotikd Verlug, 1899, pp. 58). 



Deep and shallow cultivation of cane in Audubon Park {Louisiana Planter, 

 24 {1900), No. IS, p. 285). — Shallow cultivation has given the best results. The 

 author believes that this method of cultivation of cane in Louisiana would increase 

 the yield of cane from 5 to 10 tons per acre. 



The judging and culture of wheat for brewing purposes, T. Remy {Bl. 

 Ger.'<ten-JIojifen,- a. Kartoffdhau, 1 {1899), No. 9, pp. 305-316). 



Field tests of varieties of w^heat, covering nineteen years, W. C. Latia 

 {Indiana Sta. Rpt. 1899, pp. 54-58). — -Tabulated data showing the average yield and 

 the characteristics of the grain and straw of 178 vaiieties of winter wheat and 11 

 varieties of si)riug wheat tested at the station during the preceding 19 years, with 

 notes and comments. 



HORTICULTURE. 



A study of the effect of incandescent gaslight on plant grovrth, 



L. C. (JoiiKETT ( lf(.s/ Vliyljua iSta. Bui. Gi2, j/jk 79-llU, j^/.s. />, jj'tj.^. 

 4, charts 7). — This bulletin reports the results obtained in a series of 

 greenhouse experiments carried on during the years 1895 to 1899 with 

 lettuce, radishes, spinach, tomatoes, sugar beets, and seedling cabbage, 

 mainly from an economic standpoint. Eight Welsbach incandescent 

 burners were used in the experiments, and these were so alternated in 

 position from time to time as to overcome local temperature and light 

 diti'erences. Plans of the greenhouse used and photographic, diagram- 

 matic, and auxanometer records of the growth and development of 

 the ditierent crops form an important part of the bulletin. Weighings 

 of the crops were made and the sugar beets grown analyzed. The 

 character and quality of the arc and incandescent electric lights and 

 Welsbach gaslight as compared with suidight are discussed by the 

 aid of ligures. 



The experiments with lettuce involved 12 distinct crops and nearly 

 10,000 plants. Transplanting the young plants from pots and using 

 an artiticial light only during the period the plant occupied the per- 

 manent greenhouse bench was adopted after comparative trials as being 

 the best method for the growing of lettuce on a commercial scale. 

 The plants grown in artificial light v/ere taller, heavier, grew faster, 

 and matured quicker than plants grown from the same lot of seed 

 under normal conditions. In one experiment 400 plants exposed to 

 the stimulating influences of the artificial light for 46 nights weighed 

 68.50 lbs., while a similar lot grown under normal conditions weighed 

 •±9.13 lbs., an increase in favor of the former of 38.7 per cent. 



