GUJLNO. 275 



With potatoes, it should be placed in the drill or hole, but not 

 in contact with the set or seed ; and for Indian com a case in 

 which I have had no experience it would seem advisable to 

 adopt a similar method. 



The experiments of Mr. John Dudgeon have been given to 

 the public at large. As I had the pleasure of visiting his farm, 

 one of the best-managed in the kingdom, and saw some of the 

 experiments going on, I feel at liberty to give them, and it may 

 be interesting to my readers to have them in his own words. 



&quot; The following results, communicated by John Dudgeon, 

 Esq., of Spylaw, to the Highland and Agricultural Society, in 

 April, 1843, show, first, the relative produce of turnips from 

 guano applied at the rate of three hundred weight, four hundred 

 weight, and five hundred weight, per acre, in competition with 

 the produce from the farm-yard manure, applied at the rate of 

 eighteen yards per acre ; secondly, the trial of bone-dust with 

 coal-ashes against guano alone, and guano mixed with a portion 

 of sulphate of soda; thirdly, the trial of guano alone against 

 bone-dust alone. 



&quot; The first experiment was in a field lying upon a slope, 

 with a southern exposure, the soil consisting of a good loam 

 upon a retentive sub-soil ; the upper part of the field, for about a 

 fourth of its length, gradually becoming shallower in soil, and 

 resting upon a hard muhiand pan, so that the value of the lower 

 portion of the field, as compared with the upper, may be esti 

 mated as three to one. This field has been but imperfectly 

 drained. It was dunged in the usual way, immediately before 

 sowing, with well-prepared farm-yard manure, at the rate of 

 about eighteen cubic yards to the acre, with the exception of 

 that portion to which guano was applied. Two ordinary drills 

 for the latter were selected at random, and the guano distributed 

 in them by the hand, without any mixture, at the rate of three 

 hundred weight per acre. Leaving an interval of three drills, 

 which were manured like the rest of the field, two other drills 

 were treated with guano, at the rate of four hundred weight per 

 acre ; and finally, with a similar space intervening, two drills 

 with guano at the rate of fully more than five hundred weight 

 per acre. No difference appeared in the turnips (which were the 

 variety named Dale s hybrid) previous to singling or thinning 

 the plants with the hoe ; after that, however, the superiority of 



