1S8 



Disease in Plants. 



8 inches deep ; the tubers were nearly of equal weight — 1 J oz. 

 on the average. The turf was not, as in the earlier bean experi- 

 ments,* from Schleissheim, but from the moor at Haspelmoor, 

 near Rosenheim, which when employed in other experiments 

 had grown barley exceedingly well, each grain of barley throwing 

 up three or four shoots, which produced full ears and a yield 

 cfjual to that of a thoroughly good barley soil. 



Analysis of the Hasjyelmoor Turf. 



100 parts of tm-f dried in open air contained : — 



Water 



*Co)nbustible and volatile substances 



.. i7-2n 



.. 72-15 

 Ash 10-59 



100-00 



*Containing nitrogen 



100 parts of asli consisted of :— 



Soda 



Potash 



Mamesia 



•4fi 



1-04 



0-90 



Lime 10-45 



Sesqnioxide of iron and alumina 



Chlorine 



Phosphoric acid 

 Sulphuric acid 



•07 



-14 



Silica 21-18 



•40 



Sand, clay, carbonic acid, &:c. 



41^ 



100^00 



The turf, on being burnt, gave 10^59 per cent, of ash, and 

 hence each box contained 25*2 kilogrammes (i cwt.) of ash- 

 constituents. Consequently, the turf in the three boxes contained 

 tlie following constituents in 1000 parts of turf: — 



Box I. 

 In unmixed 

 Turf. 



0-98 



r83 



0^98 



* Experiments described in pi'tvious transactions of the Agricultural Society of 

 Bavaria. 



