15 



tablos, and from tlioso aualysos tlic vicld of dry niattor and of oach 

 food iti^Medient is calcHiUitcd for cacli ])lat and the averages for tlio 

 plats receiving like applications of fertilizers. 



In tliis fxperiment the maize jilanted in driiis ;javo about 6 per cent larger yield of 

 dry matter than tlio maize planted in hills, and also a lar<;er yield of eacli food iugro- 

 d1ent. • • • 'I'lio composition of the crop, and tlieiefore its feeding value per 

 ]ionnd, were practically the same whether i)lanted in bills or in drills. 



The composition of the crops grown on the dillerent, fertili/ers is practically the 

 name; but where no ft^rtilizer was applied the per cent of albuminoids in the crop 

 is about 1.7 lower, with a correspondinj^ increase in the per cent of liber and nitrogen- 

 free* extract. * * ' 



It h;i,s been shown by our experiment of the 2 preceding years that the per cent 

 of albuminoids in the crop may be strikingly increased or decreased by changing the 

 distauceof i)lantiug [see Annual Report of the station for IH&'J, p. 2'i',\, or Experi- 

 ment Station Record, vol. ii, p. 478]. 



The author gives tables showing the composition of the largest crop 

 of dry matter raised in 1S8S an<l lS8t», an<l the largest yields in drills 

 ill 1890; the ponnds of nitrogen, phosphoric acid, and potash applied 

 to and taken from the soil in 1888, 188!), and 1890, and the gain or loss 

 to the soil of these three ingredients by 3 years' cropping. 



On the determination of piiospiioric; acid in presence of 

 iron and alumina, s. w. jodnson, m. a., and t. b. osborne, pn. 

 I), (pp. 195-107). — This is a comparison of the original and the "ofticial" 

 molylxlif methods of determining i)lH»sphoric acid in the presence of 

 iron and alniniua on eight ditferent materials. The authors point out 

 the difference between the original molybdic method as elaborated by 

 Sonnenschein and the method as recommended by the American Asso- 

 ciation of Otlicial Agricnltnral Chemists, the jnecipitation being effected 

 in the latter from a hot solution with digestion for 1 hour at 6o<^ C, and 

 in the former by adding "a. large excess of molybdic solution [to the 

 (!ohl solution of the siiljstancej and keeping for 4 to G hours at a teni- 

 I)erature near to but not exceeding 50° C." With the "official" 

 method, " when iron and aluminum are in the solution, these metals are 

 to some extent carried down with the yellow precipitate, and when this 

 is dissolved in ammonia they are also dissolved and pass into the alka- 

 line filtrate and thence into the magnesium phosphate." 



The results of determinations by both methods are tabulated. These 

 results show (lifferences of 0.."» jkm- cent or over between the two meth- 

 ods in several instances, this <lifference amounting with one material 

 (Keystone Concentrated Phosphate) to over 2 per cent of phosphoric 

 acid. With a single exception the results were highest with the official 

 method. 



Georgia Station, Bulletin No. 12, April, 1891 (pp. 10). 



Field experiments with F()RA(;e plants and analyses of 

 THE PRODUCTS (pp. 47-54). — Tal)nlated data of yields and analyses of 

 amber cane, white and yellow millo maize, Kaffir corn, lUiral Branching 



