1*4. STATISTICAL SURVEY 



perch. A confiderable time muft intervene, before 

 ground will admit of a fecond marling with advantage, 

 the period longer in proportion to the quantity laid on 

 at firft : Mr. Gracey, from whom I received much 

 valuable information, mentioned that forrel appearing 

 is a fign, that marling may be repeated with advantage. 

 The marie found in this county is generally of a white 

 or grey coloured kind, from the bottom of bogs, and 

 fmall lakes, and fome of it immediately under the fur- 

 face. Shelly fand, and gravel, are alfo ufed with ad- 

 vantage, along the different fhores ; they are laid very 

 thick upon ftiff clay foils, and the beft crops obtained 

 from them ; as fallowing is now feldom praftifed, thefe 

 manures are laid on grafs, which they wonderfully 

 improve. Wreck is alfo much ufed along the coaft j 

 often in blowing winds all hands are at work in draw- 

 ing it up and fecuring it , it is ufed both for potatoes, 

 and, in fome qafes, for grain ; its duration is but Ihort. 

 Of mofs or turf-bog as a manure.- This fubftance is 

 ufeful in the above-mentioned quality, both in itfelf, 

 and when compounded with other materials ; upon 

 thin and (harp foils, mixed with lime or dung, it 

 is excellent, not only as a manure, but as adding 

 to the depth of the land j for this purpofe, how- 

 ever, it fhould not be taken at random, but at fome 

 diftance from the furface, and, if fo deep that fome 

 mixture of clay fhould appear along with it x the effect 



upon 



