1060 EXPERIMENT STATION RECORD. 



superphosphate 8.2 per cent was utilized by the crops, and of the quantity given in 

 the other 3 forms 7 per cent was used. DoubUng the apphcation of Algerian phos- 

 phate gave but a slight increase in yield and was not profitable. The effect of the 

 crude phosphates on rye was quite marked but on wheat it was very slight. From 

 the results with rye the author concludes that 60 kg. of phosphoric acid ])er hectare 

 is beyond the optimum for all the jthosphates used. Winter rye utilized on an aver- 

 age 20 kg. of phosphoric acid per hectare. The quantities taken up by the crop on 

 different plats varied considerably. Owing to this variation in the results with rye 

 and to the limited number of tests with wheat no definite applications are recom- 

 mended. 



The progress of absorption of nitrogen by cereals, J. Henhy {Bid. Agr. 

 [Brussels], 19 {I'JOo), No. 1, pi^. 154-156). — A record is given of the growth, weight, 

 and nitrogen content of barley, wheat, and rye at different periods, which shows 

 that the- absorption of nitrogen varies widely at different stages. Two periods of 

 maximum absorption were observed in case of wheat, viz, from May 7 to 17 and at 

 the time of the formation of the grain. Similarly for rye the periods of greatest 

 absorption were April 19 to 29 and June 11 to 26 (the time of formation of grain). 

 In case of barley the maximum absorption was at time of heading, June 12 to 26. 



Review of agricultural experiments, A. P. Aitken {Trans. Highland and Agr. 

 Sue. Scotland, 5. ser., 15 {1908), pp. 94-ld4) .—This is a review of experiments in 

 agriculture which are being carried on by various institutions in Great Britain, with 

 a view to showing the amount and source of this work, the direction it is taking, and 

 the progress which is being made. Special attention is called to the lack of knowl- 

 edge regarding the soils of the country, and the way in which this affects the experi- 

 mental work and its interpretation. 



Corn experiments i-n Illinois {Illinois Sta. Circ. 66, pp. 14). — This is a report of 

 progress on the different lines of investigation with corn which have been carried on 

 under State ai)i)r()priations at the station. 



The acidity of corn silage, F. W.^ Morse {New Hampshire Sta. Bui. 96, pj). 115- 

 ii7).— Analyses are given of several samples of corn silage made from different 

 varieties of corn and analyzed at different times during the years 1895 to 1899. The 

 average total acid content of samples of Sanford corn silage varied from 1.5 per cent 

 acetic acid in 1895 to 1.95 per cent in 1897. With Learning corn the variations ranged 

 from 0.67 per cent in 1896 to 1.47 per cent in 1897. The average of 5 samples of 

 Mosby Prolific, taken between March 17 to 31, 1896, was 0.82 percent. Analyses in 

 1899 of silage made from Leaming corn showed that the acidity of the surface silage 

 was usually lower than that of the silage 6 or 8 in. below the- surface, the average 

 results being 0.83 per cent for surface silage and 1.03 per cent acetic acid for silage 

 not less than 6 in. below the surface. 



Cotton culture, R. J. Redding {Georgia Sta. Bui. 59, pp. 221-250). — P^xperiments 

 similar to those conducted in previous years are reported (E. S. R., 13, p. 1038). In 

 1902, 26 varieties were under test. Moss Improved, Peterkin Improved, Schley, 

 Allen I'rolific, Texas Bur, Woodfin Nonpareil, and Prize, given in the order of their 

 value of total products, head the list in profitable returns, their values ranging from 

 131.22 to $35.02 per acre. The first 5 varieties mentioned ranked in the same order 

 in the production of lint cotton. Considering the general results for the last 9 years 

 in this line of work, large bolls, large seeds, and a high percentage of lint are closely 

 related to the greatest value of lint and seed. Brief notes on some of the varieties 

 under test ai-e given with directions for selecting a variety and for selecting seed in 

 the field. 



As in previous years, a mixture of an early and a late maturing variety was tested. 

 The varieties used this season were Schley and King Improved, of which 15.5 and 

 10 lbs. of seed per acre, respectively, were planted. King Improved, the early variety, 

 yielded much less than Schley and the mixture was also found unprofitable. Average 



