] Series and Anmers to Queries. 189 



the Cluster or Grape Fruit ; a fruit I have heard much extolled for its ex- 

 quisite flavour. I have great pleasure in taking this opportunity of bearing 

 testimony to the correct statement of An Amateur's mode of striking cut- 

 tings of the genus Citrus, given in your valuable Magazine. (Vol. III. p. 272.) 

 My gardener has tried it with complete success ; the cuttings put down 

 proving well rooted at the end of the third week. It is with much interest 

 I read the observations on the culture of the genus Citrus in the Gar- 

 dener's Magazine ; it is a tribe of plants in which I take great delight, and 

 of which I am anxious to obtain every information. The Sour Shaddock 

 grows most luxuriantly in my hot-house, producing plenty of fine fruit; 

 but the Sweet-fruited Shaddock I have not yet been able to obtain. I am. 

 Sir, &c. — P. JD. Liverpool, March 13. 1828. 



The Coccus Insect on the Nonpareil Apple. — Sir, I send you a branch of 

 Nonpareil apple, of which there are several at this place trained to a west wall, 

 and all of them are covered with an insect which I have never seen on a 

 fruit tree before. This insect does not, like the aphis, spread itself on stone 

 fruit, but it has begun to show itself on some pear trees on the east wall. 

 I have no doubt that it will ultimately kill the trees if allowed to go on, 

 and am at a loss to know what will be the best means of stopping it. I can 

 find no account of it in any book to which I have access, and should feel 

 much obliged to you for the name of the insect, and for informing me 

 what you think is likely to destroy it. I ought to add, that it spreads itself 

 on the fruit in the summer, and disfigures it much. I am, Sir, yours, &c. — 

 Rob. Reid. Montrath, near Collumpton, Feb. 20. 1828. 



The insect is the Coccus ovatus L. It is much more frequently seen 

 on the bark of young ash, and red willow trees, in woods and hedges, than 

 on fruit trees. The wash used for the extirpation of the other species of 

 Coccus, viz., urine and lime water, frequently applied before the leaves ap- 

 pear, will probably destroy or keep them under; if not, tobacco water will. 



— J. M.forCond. 



The Brown Grub complained of by Mr. Lee of Bristol seldom attacks the 

 potato, but is a mortal enemy to lettuce, celery, and all the cabbage tribe. 

 Wherever their depredations are observed, dig below the eaten plant, find 

 the insect, and destroy it, otherwise another plant will be devoured on the 

 morrow. A little fresh slacked lime laid round each plant will defend it, 

 unless the grub rises directly from below. — J. Housman. 



Woodlice in Frames, in answer to Rusticus in Urbe. (Vol. III. p. 495.) 



— Where these insects are troublesome, sink a pan in the soil, its rim level 

 with the surface : fill it half full of water, and place therein slices of ripe 

 fruit ; cover the pan with another, leaving room enough for the insects to 

 enter ; destroy the captives every morning, and continue this baited trap 

 till all are caught." — J. H. 



The Spot in Cucumbers and Melons. — Is it caused by insects or damps; 

 and is there any cure or preventive ? Any general remark upon this 

 most destructive disease will be highly acceptable to — F. of Yarmouth. 

 Jan.21. 1828. 



Mignonette and Medlars. — W^hat time ought mignonette seed to be 

 sown, and what treatment is best to procure good plants for flowering 

 during the winter months ? What is the best plan of keeping medlars for 

 spring use ? — Id. 



Maggots in Celery. — Sir, During the two last months the celery in this 

 neighbourhood has been very much infested with small maggots, which bred 

 in the leaves, so that the most promising crops have been entirely destroyed 

 by them. Some assert that they may be prevented by planting the celery 

 without dung ; but this I can contradict, for I planted a row in the middle 

 of my celery quarter without any, but it was covered with the insects in 

 the same manner with those which had the common treatment. 



