No. 105.] 365 



four years, with as much virulence as on those fields which have had 

 little or none for years. In a large field which was well limed on 

 the stubble, at the end of the year before being plowed for the potato 

 crop, the disease is very prevalent, whilst in the crop in a field which 

 I believe has not had lime for the last century, there are fewer dis- 

 eased tubers than in any other field I have seen this season." 



Mr. Mc Gregory Dumbartonshire. '^ It could not be the want of 

 lime in my case, as I put on seventy barrels per Scots acre, before 

 drilling for seed. In another field after they were set, the same 

 quantity." 



Mr. Drummond, near Dundee. " I do not think new limed land 

 makes any difference. A field at Castle Huntley was laid down to 

 grass well limed, and when plowed up it was very full of it ; this 

 field was very bad." 



Mr. Girdwood, Mid-Lothian. " I find fields limed only last year, 

 quite as bad as others." 



Mr. Laurie^ Dumfriesshire. My worst field, had been heavily 

 limed a few years back." 



These answers are, I think, amply sufficient to show that lime 

 alone has little influence on this disease ; though its presence in the 

 soil naturally or otherwise, is quite indispensable to the production 

 of a healthy potato. It is to be observed that no one of the above, 

 tried the plan which was successful with Mr. Lockhart, of applying 

 hot lime on the braird. 



Query 15. — Does the disease in your district attack particular 



fields or farms, and what are the peculiar conditions of those farms'? 



Most of the facts embodied in the answers to this query, have 

 been brought forward under some of the previous queries. Nearly 

 all agree, that no soil is entirely exempt, and that the richest and 

 best cultivated fields have generally been first attacked. 



Mr. Kennedy, Stranraer, Wigtonshire, says, " Some well man- 

 aged farms have been severely attacked, while others scarcely so 

 well managed have comparatively escaped." 



Mr. Gardiner says, " It appears to have spread most and quickest, 

 in heavy lands, and amongst the strongest and heaviest crops." 



Mr. Elliott f Hardgrove. " It attacks all farms in this district, 

 only on the richest, earliest and best soils, it was first seen." 



