The Wohurn Pot- Culture Experiments, 1914. 321 



weighed. The following Talile gives the average produce of 

 each set : — 



No. 



10 



No treatment 



Bottomley preparation applied once . 



>i )) 11 )i 



Bottomley preparation applied twice 



Bottomley preparation applied once, with phos- 

 phate of potash 



n 5) )) n )> II 



Bottomley preparation applied twice, with phos- 

 phate of potash 



II )! I) n n 1' 



Nitrate of ammonia applied once 



f ij 11 )) • • 



Nitrate of ammonia applied twice . 



)i )) )) 11 • • 



Nitrate of ammonia applied once, with phos 



phate of potash 



1) >) 11 II 11 



Nitrate of ammonia applied twice, with phos- 

 phate of potash 



Phosphate of potash alone 



(«) 





(a) 

 (&) 



(a) 



(a) 



(ft) 



Total 

 weight of 



fruit 

 per pot 



Grms. 

 1066-81 

 1160-6 [ 



959 

 1452 



925 

 1024 



1161-3 

 1092 



'l\ 



934-5' 

 851 



54-51 

 51-1 [ 



j-9) 



( 



1046-9 i 

 1374- 



1128-3 

 1063-4 



914-6 

 1171-2 



1213-31 

 1355-6 j 



866-3) 

 928-3 j 



Average 



Grms. 

 1113-7 



1205-9 



964-9 



1126-9 



892-8 

 1210-7 

 1095-8 



10429 



1284-5 



897-3 



Though the appearances were so marked on the growing 

 plants, it will be seen that the differences were not borne out 

 in the fruit jDi-oduced. The results in fruit with Bottomley's 

 preparation were not as high as those when nitrate of ammonia 

 was similarly applied, and, indeed, were slightly below those 

 of the untreated soil. 



Putting together the general conclusions formed from the 

 foregoing experiments, there can remain no doubt whatever 

 that the Peat preparation exercised a distinct influence upon 

 the vegetation. The results with barley, peas, and mustard, 

 coupled with those on the vegetative growth of the tomatoes, 



VOL. 75. M 



