1S73. ] 



GAEDEN GOSSIP. 



69 



good plant for early esiiibitions. Mr. Standish strongly recomnienda it as a cool greenhouse 

 flowei'ing plant, and says it will stand as much as 25° of frost without getting hai-med. 

 We have no doubt the sight of this interesting example will do something towards stimulating 

 plant growers to undertake its culture. It comes from New Zealand. 



(5ne of tlie most useful plants that can be grown in pots all iho year 



round for cutting for bouquets, is the white Jasmiiium grandijlorum. At 

 Chiswick Mr. Barron is seldom without a few plants of it in flower, which object 

 is attained by keeping several batches of it in various stages of growth. The plants are all 

 worked on a common stock, and as soon as they have done flowering they are cut back, 

 rested for a short time, and then when young shoots begin to jjush they are shaken out and 

 repotted in S2-sized pots. The successional batches are treated in the same way. 



©NE of the simplest, and apparently one of the most economical of Hot- 

 Water Boilers^ is that caX[.Qdi.Deards Patent Centrifugal Heatiiig Apparatus^ of which 

 a wood-cut is annexed. It will be seen that the boiler consists of a continuous 

 coil of pipe completely surrounding the fire. This arrangement, by which the water, which 

 has become cooled while traversing the pipes, is speedily reheated, and leaves the upper coil 

 at a high temperature, secures a i-apid circulation throughout the apparatus, this prompt and 

 free distribution of heat being effected by a comparatively small consumption of fuel, which 



A, Boiler for heating large houses; B, Stove for warming small houses. 



is brought to boar so directly upon the boiler-surface during its combustion. The larger 

 sizes are set in brickwork in the ordinary way ; but Mr. Deards has also adapted the principle 

 to a slow-combustion stove, and has in this way provided one of the best and readiest modes 

 we have seen for heating the small conservatories and greenhouses of amateurs. With this 

 small slow-combustion stove, consuming, it is said, one Wshel of coke or cinders, and keeping 

 heat ^u 100 or 150 feet of hot-water pipe, all damp cold and frost are entirely prevented, at 

 the small cost of 4d. per day, the stove burning from 8 to 12 hours without attention. We 

 presume this estimate was made before the present days of high-priced fuel, but in any case the 

 apparatus is evidently most economical. 



3iN the new Platijloma hrachjptermn we have a neat and entirely novel 



greenhouse Feni, related in some respects to Platyloma mucronatum (Pellaea 

 mucronata, Eaton), but differing in its linear fronds and much narrower pinnules. 

 The erect position of the rigid pinnaj, with the spreading direction of their pinnules, giving 

 the narrow erect blue-green fronds a bristling appearance, are very peculiar features, while 

 the short stalkless pinna3, almost foi-ming a semicircle in outline, furnish another striking 

 characteristic. The decumbent caudex appears to creep amongst rocks and stones, and is 

 thickly furnished with the bard enduring fronds, those at the apex emerging from a conspic- 

 uous tuft of very narrow scales. The pinnae are nearly uniform throughout, the large ones 

 not exceeding an inch in length, and about li in. in breadth. It is nearly allied to P. 

 bellum, but is larger in its parts, with fewer pinnules. The Messrs. Veitch and Sons, of 

 Chelsea, have recently imported both these plants in a living state from California. 



