226 DISEASES AND ENEMIES OF GROWING PLANTS. 



799. The eggs are hatched in July, so that the larvae 

 will have attained considerable size, and may easily be 

 seen and dislodged without difficulty. Even later than 

 this, careful examination will show that they are still 

 near the surface, and may be reached by a slender piece 

 of whalebone or wire, run into the new-made hole. 



800. The chisel and the hammer must be used only 

 when all other means fail. Washing with whale-oil soap 

 will prevent the laying of the eggs, but it will not do to 

 rely on this alone. If unmolested when still quite 

 young, the borer continues his depredations from year to 

 year. 



801. The striped beetle, (Fig. 64,) attacks 

 squashes, cucumbers, melons, and other plants. 

 To prevent injury from it, the plants should be 

 sprinkled as soon as they are up, with plaster 

 of Paris or slacked lime put on in the middle of the day, 

 or they may be covered over with coarse millinet or lace, 

 which answers quite as well. If squashes or cucumbers 

 are not planted till the 10th of June, they will usually 

 escape the attacks of this insect. 



\ / 802. Squash bugs, (Fig. 65,) may be 



\\// destroyed by placing shingles on the ground 



r-Sjlr~-\ round the vines, and killing the bugs which 



^//l^V will be found in the mornhig collected on 



f Wr ] ^ 1C llll( lor s ide f them. 



y \ 803. The onion maggot pierces the 



Fig. 65. centre of the onion and kills it, the egg 



from which the maggot proceeds heing 



JW,^ laid near the root by the onion fly, f I V- 

 7^V (JO.) The pupa of this insect is shown in 

 Fi 67 Fig GO % urc 67. The use of soot in the drills is 

 the best preventive known. 



