IV PREFACE. 



occurred as doing mischief to Clover leafage which is worth 

 record, as the damage caused to the leaves by these minute " Pear- 

 shaped " Weevils is not so often noticed as that to the seed. 



In the case of the Frit Fly, of which the maggots sometimes 

 cause serious loss by feeding in young Oat plants in the spring, 

 we secured specimens of the late brood in the Oat-heads in har- 

 vest time, thus completing the year's history of the infestation, 

 which is always desirable. Amongst Mangolds we traced a root 

 attack on the young plants, to presence of a minute, but 

 exceedingly numerous beetle and its maggot, which it would be 

 very useful to have further observations of in the coming season. 



Mustard Beetle attack being now taken into consideration for 

 observation and experiment by growers well acquainted with all 

 the requirements of the subject, will probably be put on a much 

 better footing. 



In connection with Turnip and Cabbage-root insect attack, I 

 have so often received enquiries as to the nature of the diseased 

 enlarged growths, commonly known as "Anbury," " Finger-and- 

 Toe," or "Club," that, as I have personally studied this infes- 

 tation and its cure for years, it seemed desirable to give some 

 notes on this " Slime Fungus " attack, together with those on 

 insect attack, often coincident with it, though of quite a different 

 nature. To this paper three Plates are added, after photographs 

 from life, to afford investigators the opportunity of observing the 

 minute alterations which take place in external structure as well 

 as in form of the diseased roots. 



Under the head of Tomato will be found an account of the 

 appearance in this country of the attack of the Heterodera radi- 

 cicola, the " Eoot-knot " Eelworm, so-called from the galls to 

 which its presence gives rise. It is to be hoped that in this 

 country it will not spread to the roots of many kinds of out- 

 of-doors fruit and vegetable crops, as is the case in America. 

 Still the infestation is so destructive, also so very infectious, and 

 so exceedingly difficult to extirpate when once established, that 

 it is a serious matter for consideration by growers of fruit crops 

 under glass. 



Amongst ordinary fruit attacks, of which the histories have 

 been serviceably added to, are the Currant- shoot Moth, observed 

 by Dr. Chapman, of Hereford ; and further information on Apple 

 Sawfly, through co-operation of Mr. Coleman, of Cranfield, New- 

 port Pagnell. The large amount of enquiry regarding common 



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