KXPElilMEXTAL STATIONS — KErOllT FOR 1879. 



279 



Of the solid matter contained in turnips, the ash and allni- 

 menoid matter are the most important; the former as it af'l'ects 

 the more or less ra])id exhaustion of tiie soil where the crop is 

 taken oil' the unumd, and also the ridiiiess of tlu; manure derived 

 from their consuni])tion ; and tlie latter as it affects the feeding 

 value of the turni)). The amounts of these two constituents 

 were estimated in the samples of nearly all the plots at Hare- 

 law, and ill those samples of the Puiiqihcrston crop that were 

 considered worth analysing, and were as in the foregoing tal)lt!. 



In the third colunni of each side of the table is contained the 

 percentage of ash contained in the dry matter of the various 

 plots ; and from these numl^ers and the total amounts of dry 

 matter ]K'r acre there lia\e been calculated the total amounts of 

 ash ])er acre, which are contained in the fourth colunni. Frmn 

 the smallness of the samples taken, these numbers must be 

 Wigarded as indications rather than as accurate expressionsof truth, 

 and are chiefly serviceable as pointing out a direction in which, 

 with larger samples and larger means of investigati(»n, useful 

 information may be expected from the analyses of future crops. 



As regards the effect of dissolved and undissolved phosphates 

 u]ion the ash of turnips, the results of the first ten plots, arranged 

 as under, give some very well-marked indications. 



Ha HE LAW. 



