511 



Origin of cold waves, C. F, Von Oerkmann (pp. 32-36).— A short 

 <lisciiysi()n of the canscis for the ori<»in and progress of cohl waves, with 

 brief descriptions of attendant phenomena. 



Oregon Station, Bulletin No. 7, October, 1890 (pp. 12). 



COMPAIJATIVE TESTS OF SMALL FIIUITS AND VJiUETAELES, G. 



CooTE. — Tabnlated notes on 21 varieties of tomatoes, 21 of straw- 

 berries, and 13 of peas, with brief descriptive notes on 4 varieties of 

 canliHowers. 



South Dakota Station, Third Annual Report, 1890 (pp. 23). 



Report of director L. McLoutii, Pji. I), (pp. 7-10). — This is 

 for the year ending Jnne 30, 189(>, and incUules a brief outline of the 

 work of the station and a financial report. 



Department of agriculture, L. Foster, M. S. A. (i)p. 11-15). — 

 Brief reference is made to experiments with sngar-beets, recorded in 

 Bulletin No. 16 of the station (See Experiment Station Kecord, Vol. II, 

 p. 130), and with methods of seeding wheat, recorded in Bulletin No. 17 

 (See Experiment Station Record, Vol. II, p. 132). 



Experiments icith grasses and clovers have been made at the station 

 for three seasons under conditions making a severe test of their ability 

 to endure drought and the cold of snowless winters. Details are to be 

 rei)orted in a future bulletin of the station. Some of the results are 

 stated to be as follows : 



(1) lu iseediiijr the best stand came from sowing- done early in the spring, uot iu 

 (■(MUHction with grain, the gras.s being aHowed to grow the whole season unuiowed. 



(2) Of the plats witli grain, that sown with winter rye proved best, the rye being 

 planted in the fall and the grass iu the spring. 



(3) Twenty eight plats were sown with ditierent varieties of grasses and clovers 

 in the spring of 1888. Of these the following are all that have survived the two 

 seasons with little or no loss by drought or winter-killing: tall meadow oat, wood 

 i'escne, Kentucky blue-grass, meadow fescue, creeping bent, redtop, sheep's fescue 

 orchard grass, Rhode Island bent, hard fescue, and timothy. Alfalfa sown one year 

 rarlier, lived through two winters, was mowed three times each season, the first 

 I xcepted, and was still vigorous when i)lowed under 0,1 the close of the third season. 

 A large per cent of the following clovers, sown in mixture with several of the above- 

 named gra.sscs, have lived through the two winters even under the test of close 

 ]iastnring the second season : common red, mammoth red, alsike, Avhite Dutch, and 

 alfalfa. 



Experiments loith corn with reference to the length of the season of' 

 growth at the station as well as to test varieties and inethods of plant- 

 ing and cultivation, have given results stated as follows: 



(1) The .season is sufficiently long for the complete maturity of nearly all the flints 

 and most of the small dents. 



(2) The season can not be lengthened by planting before the temperature of the 

 ■^oil and atmosphere are right for growth. 



