^^^3-] PAULLINIA THALICTEIFOLIA. 123 



a few others, whicli will not "set" freely, unless grown in a higli temperature, and 

 assisted in the process of impregnation, in some way — by dispersing either their own, 

 or the pollen of other varieties amongst their flowers ; and when this is properly 

 attended to, I believe there are no varieties but what can be successfully "set" in 

 all weathers. Such at least has been my own experience, with the single exception 

 of the Unseat Hamburgh, -which when started after the beginning of February "sets" 

 with ordinary attention as freely as most other varieties, but when started a few 

 weeks earlier, appears to " set " equally well, and will swell for a time till after the 

 thinning of the berries takes place, soon after which, they begin to swell irregularly, 

 whole shoulders having more than half their berries seedless, and scarcely half 

 the usual size, while others in large numbers, do not grow much larger than peas. 

 I have observed the same thing to a lesser extent, with other varieties of Muscats, 

 Is this the result of partial but imperfect impregnation, arising from the want of 

 :5unshine or light ? Certainly it is not from the want of heat, or caused by a 

 stagnant damp atmosphere. 



If it were possible, in general practice, to grow each variety of vine in a 

 separate house, I beheve the treatment of each, in the hands of expert culturists, 

 would be slightly different. Some, such as the Muscats, Black Morocco, «fec., 

 would require both root and branch temperatures higher. Others, such as the 

 Hamburg/is, Sweetwater, &c., could be grown in comparatively cool houses. Some 

 would succeed best in strong loams, others in lighter soils, all requiring thorough 

 drainage, and a liberal allowance of water during the earlier stages of their 

 growth. The variety of treatment applicable to the different varieties would be 

 doubly important during the flowering period. 



All this goes to show the difficulty of giving exact instructions as to treat- 

 ment during the flowering process. In general, I would recommend all the 

 Muscats and most of the shy-setting varieties to have the temperature increased 

 "both by night and day; the night temperature to run from 75° to 72°, being 

 highest during the early part of the night, falling a few degrees towards morning, 

 and rising during dull weather at least 10° for a few hours in the warmer part 

 of the day, always accompanying the rise of temperature with additional ventila- 

 tion. In bright sunny weather, the thermometer, with plenty of air on, may be 

 safely allowed to rise from 90° to 95°; never omitting in some way the dispersion 

 of the pollen during the hottest part of the day. 



Free-setting varieties, such as the Hamburghs, set readily with an average of 

 6° or 8° less heat than the Muscats, but all vines should have additional heat, 

 both by night and day, while in flower.— A. Fowlee, Castle Kennedy. 



PAULLINIA THALICTEIFOLIA. 



jN its foliage, this tropical climbing shrub bears a very striking resemblance 

 ^ to a fern ; ^in fact, its slender stems, compound leaves, and light green 

 ^ colour, give it a close prima facie resemblance to one of the scandent 

 > Davallias, Its beauty as a garden plant depends on its foliage, the flowers 



g2 



