DIAMOND-BACK BIOtH. 151 



later. Mr, Harper, after noting his success this year in lessening 

 amount of Eel- worm attack in his Oat crop, continued : — " I have 

 apparently got out of one pest, but am into another, namely, the 

 Turnip caterpillar ; it has done me extraordinary harm. I have been 

 trying all likely things to get the pest checked, but nothing has done 

 so much good as the weather ; we have had a severe storm of wind 

 and rain from the north, and the pest has almost disappeared. The 

 insects are so secure below the Turnip blades, that nothing I have 

 tried can get at them ; if it had not been for the weather my crop 

 would have been all useless and destroyed." 



Replies to inquiries in circular (see p. 110), August 11th : — 



(1). " 24 acres more or less destroyed ; about 10 acres totally de- 

 stroyed, to the value of £100 ; the other 14 acres would be destroyed 

 to about £3 to £5 per acre. 



(2). " Tried hot lime, also paraffin, soot, &c. None of them appear 

 to do good, as the caterpillars are fairly secured below the leaves. 

 Scuffling destroys them very much. 



(3). " I have no doubt the weather does more to check the attack 

 than anything you can do. We had a week of very stormy weather, 

 and it almost cleared the plants (as you will see by the enclosed). 



(4). " Good black land, and in good heart, is free from attack. 

 Heavy clay land is destroyed a good bit, especially where it is of any 

 wet nature. Light mossy land, with a little gravel through it, is 

 entirely destroyed ; nothing left but a few stumps. Manure used — 

 about 20 square yards of good farmyard dung, with about 10 cwt. 

 manure composed of three parts of dissolved bones ; three superphos- 

 phate ; three sulphate of potash, and one of nitrate of soda. The land 

 was heavily ploughed. 



(5). "The weather was observably wet in previous autumn, but 

 had no weeds to clean, so the weeds could have nothing to do with 

 the attack. 



(6). " This is undoubtedly the same caterpillar that frequents 

 Charlock. I have carefully examined it, both with the naked eye and 

 also with a magnifying glass. 



(7). " I have noticed the Crow paying particular attention to the 

 worst parts of the fields, so I shot one of them to see what it had in 

 its crop, and found it nearly full of the caterpillars, hundreds of 

 them." 



LANAKKsmRE. — Newtoii Farm, Newton, Glasgow, N.B., August 11th. 

 From Mr. John Speir. 



Replies to inquiries in circular (see p. 110) : — 



(1). "Loss in my locality is comparatively trifling; practically 

 speaking nil. Most crops of Swedes contain a few caterpillars, but 



