342 EXPERIMENT STATION RECORD. [Vol. 37 



Tbe results obtained from Washington wtieat No. 536 indicated that the wheat 

 was too nearly matured for a satisfactory study of enzymatic action, but fur- 

 ther confirmed the results noted above regarding the formation of gluten in the 

 presence of considerable moisture. A comparison of the temperature effects 

 obtained for the first day of harvest showed that heating to 35° was as effec- 

 tive in inhibiting gluten formation as was heating to 50 or 55°, indicating that 

 a temperature of 35° is destructive to the gluten-forming enzym. 



Samples of Marquis spring wheat were subjected to temperatures of from 40 

 to 50° for periods of 5, 10, 20, and 30 minutes, but further observations are con- 

 sidered necessary before attempting to establish the relationship of tempera- 

 ture and moisture content of grain to gluten formation. 



Wheat subjected immediately to temperatures ranging from 40 to 55° 

 showed more nitrogen in the amino form than wheat heated to 50° after inter- 

 vals of 24, 48, and G6 hours. 



Spraying- of charlock in corn (Univ. Col. No. Wales, Bangor, Dept. Agr. 

 [Pi/6.] 7 (1915), pp. 2-6). — Cooperative spraying tests at numerous centers in 

 North Wales for the eradication of charlock in corn are reported. A 4 per cent 

 solution of copper sulphate is recommended, applied as a fine spray when the 

 weed is in full bloom. 



HORTICULTURE. 



Horticultural laws of the State of Washington (Olympia, Wash.: State, 

 1915, pp. 32). — The text of the laws enacted in 1915 is given. 



Luther Burbank, his methods and discoveries and their practical applica- 

 tion, edited by J. Whitsu.n and R. J. and H. S. Williams (New York and Lon- 

 don: Luther liurbank Press, 1914 vols. Ji-9. pp. SOS, pis. 105 eaeh ; 1915. vols. 

 10-12, pp. SOS, pis. 105 eaeh). — The first three volumes of this work have been 

 noted (E. S. K., 32, p. 143). 



The garden, S. B. Shaw (Md. Agr. Ext. Serv. liul. 3 (1911), pp. 51-61, figs. 

 j^). — A popular bulletin on vegetable gardening including directions for the use 

 of spray materials in small quantities. 



The home garden in Kentucky, C, S. Adams (Kentucky Sta. Circ. 14 (1917), 

 pp. 9-59, figs. 19). — A practical treatise on vegetable gardening, including a 

 discussion of the general principles and directions for growing the more im- 

 portant vegetables. 



Variation in artichokes, A. D. Siiamel (Jour. Heredity, 8 (1911), No. 7, pp. 

 S06-309, figs. 2). — The author points out and illustrates instances of variation 

 in the plants and flower heads of globe artichokes, and suggests the opportunity 

 for improving these i)lants through bud selection. 



Experiments in keeping asparagus after cutting, V. W. Morse (Massaehu- 

 setts Sta. Bui. 172 (1917), pp. 297-307).— The author conducted a number of 

 experiments to determine the changes whicli take place in asparagus when 

 stored under different conditions from the time when it is cut in the field until 

 it is ready to be cooked. Data are given showing the weight when fresh as well 

 as the loss in weight of dry matter and total sugars from dry matter after 

 storage. 



The results show in substance that asparagus stalks will become limp even 

 when on ice unless their butts are in water or some other means are taken to 

 reduce the evaporation to the lowest point. Even when the butts are place<l 

 in water there is loss, both in dry matter and total sugars from dry matter. 

 This loss is greater under room temperatures than under refrigeration. The 

 weight of stalks placed in water under room temperature increased more than 

 those placed in water under refrigeration. By placing the stalks uuder refrlg- 



