956 EXPERIMENT STATION RECORD. 



ments arc reported. The plats on which the tobacco was grown were bedded and 

 this method of culture gave good results. The use of commercial fertilizers gave as 

 good results as the use of baruyard manure. The use of guano proved detrimental 

 to the. quality. 



Report on variety tests, Edlek (Jahrb. Deut. Landw. Gesell., 13 (1S9S), pp. 

 1S4-1S9. — This report contains brief notes on the results of tests with 13 varieties of 

 spring wheat, 11 of winter wheat, 23 of square-head wheat, and 1 variety of lupines. 



The relation of crop rotation to fertilization, Schiltz and Maerckek (Jahrb. 

 Dent. Landw. Gesell., 13 (1898), pp. 31-47). — A paper read before the German Agricul- 

 tural Society. 



Green manuring and its extension in Bavaria with reference to soil, climate, 

 and other conditions, Schnidhr ( Vrtljschr. Bayer. Landw. Rath, 3 (1898), No. 4, pp. 

 459-47S). — This article discusses the value of various plants for green manuring and 

 suggests 8 different crop rotations for the improvement of soils. 



Green manuring and fallowing on heavy soils, W. Edleu ( Fuhling'e Landw. Ztg., 

 47 (1898), No. 22, pp. 841-847; 23, pp. 870-880).— Comparisons of green manuring and" 

 fallowing on heavy soils were made and the results are here given in tables and dis- 

 cussed. In general the results were in favor of fallowing, even when peas were used 

 for green manuring. The author believes fallowing preferable to green manuring 

 on heavy soils, as sowing of fall catch crops is often unsuccessful and as these soils 

 are usually not poor in nitrogen. 



Report on fertilizer experiments in 1897-98, Tancrk (Landw. Wchubl. Schleswig- 

 Holstein, 49 (1899), No. 8, pp. 132-135.) — The results of cooperative fertilizer experi- 

 ments are given. 



HORTICULTURE. 



G-arden lettuce and its cultivation, L. F. Kinney {Rhode Island 

 8ta. Rpt. 1897, pp. 270-285, Jigs. 8). — In this article the author speaks 

 of the favorable location and climate of Rhode Island for lettuce grow- 

 ing, and discusses the modification of form of garden vegetables due 

 to cultivation. The frequent failure of lettuce to head is attributed to 

 the "inability of the plants to absorb or to assimilate an adequate 

 amount of nutritive substances. The former is usually due to an 

 insufficient amount of available fertilizing ingredients iu the soil, and 

 the latter to an insufficient amount of light." 



The cultivation of lettuce iu the open air is considered. "The ordi- 

 nary garden fertilizers are adapted for the production of lettuce, but 

 two or three times as much of them should be applied as is necessary 

 for the growth of beets, cabbages, and most other garden vegetables." 

 The development of lettuce cultivation under glass during the last 

 50 years is sketched. Directions are given for starting the plants, 

 preparing the soil, and for the general care of the crop, especially in 

 regard to temperature, watering, and diseases and injuries. The fol- 

 lowing varieties are the ones generally grown in Rhode Island: White- 

 seeded Tennis Ball or Boston Market, Big Boston, and another variety 

 resembling the Big Boston. The preparation of lettuce for market is 

 also considered. 



Classification and description of the varieties of garden lettuce, 

 L. F.' Kinney {Rhode Island Ma. Rpt. 1897, pp. 286-316, Jigs. 28).— The 

 author believes that the characters of such plants as the garden lettuce 



