ON THE ROSE. 59 



position to form a seed pod. In the same border I have an- 

 other bulb, which has been growing there two years, quite un- 

 protected in winter. This in the month of June surprised me by 

 not only throwing up a noble flowering stem, far exceeding any 

 of the others, but also by perfecting its seed pod, and that with- 

 out any artificial impregnation. As this may be a novelty, I have 

 much pleasure in sending it to you ; possibly its produce may be 

 even hardier than the parent bulb 

 The border in which these plants have grown is particularly calcu- 

 lated for the culture of tender bulbs. Brunsvigia Josephinae flow- 

 ered there last autumn, with a stem nearly as large as my wrist 

 and a head of thirty six flowers, seeding abundantly; lsmene cal- 

 athina, Vallota purpurea and many others flower annually. Hee- 

 manthus toxicarius flourishes there, but has not blossomed. 



F. Belfield. 



ARTICLE VIII. 



REMARKS ON THE ROSE. 

 (Continued from page 37.) 



The principal enemy of the rose is a species of fly, called the rose 

 saw-fly, which pierces the tender flower-bud, and thrusts an egg 

 into the puncture, which soon becomes a caterpillar that nou- 

 rishes itself by eating away the heart of the young flower and 

 fruit, down to where it joins the stalk. It then loses its supply of 

 nourishment, droops on one side and dies, whilst the insect spins 

 itself a descending rope, by which it reaches the ground, and 

 entombs its body in a silken shell, whilst its transformation takes 

 place first into a chrysalis, and then a fly, which renews this work 

 of devastation^ 



There are several flies of this genus, that are equally injurious 

 to the rose tree. These flies are furnished with a very remark- 

 able instrument, in the shape of a saw, by which they make small 

 holes in the bark of the young branches, where they deposit their 

 numerous eggs, which on the succeeding summer are hatched by 

 the warmth of the sun, and nourished by the ascending sap, until 

 they assume the appearance of small green flies, in which state 

 they issue from the bark in such numbers, as to cover the tender 



