16 



JOURNAL OF HORTICULTURE AND COTTAGE GARDENER. 



[ January 20, 1870". 



the heat away ; on a still night the air next the glasa ia heated 

 by the radiation, and prevents the glasa from cooling so rapidly. 

 Mr. Woolfield is of course correct in saying it ia always better 

 to have plenty of piping, and I have no doubt Mr. Hood's rules 

 may give a sufficiency. I only pointed out that the rules given 

 laid down certain things aa fixed quantities which must in 

 their nature be constantly varying, such as 125° (the excess of 

 the temperature of the pipe above the surrounding air), and 

 again 222, the number of feet of air raised 1° per minute for 

 every foot of pipe, &c. These quantities must necessarily 

 depend on the heat of the pipe, which cannot be constant, and 

 the radiating power of the external air, which also cannot be 

 constant. I will not, however, enter upon this topic any more, 

 and must apologise for having trespassed so much on the 



patience of those of your readers who have followed me thus 

 far. At all events I am glad that Mr. Woolfield allows it does 

 good to turn the heated gases over boilers, although on the 

 lesser ground of preventing loss of heat. I think many of your 

 readers will agree with me that it also adds to the heat, — 

 C. P. Peach. 



P.S. — I forgot to anawer Mr. Woolfield's query about the size 

 of the boiler I am using. It is an ordinary saddle, 18 inches 

 high, 22 wide, and 2-1 long, exterior measure ; it is about 

 14 inches high in the interior, 14 inches wide, and contains 

 nearly 6 feet interior surface, and about 7i exterior, including 

 the top. The sidea being about 7 inchea in vertical height 

 before the curve commences, would give 4| Bquare feet of Bide 

 flue without the top. 



PABANEPHELIUS UNIFLORUS. Papp. 

 " Fob this interesting plant, here figured for the first time, our I the ground, and forming with its leaves a rosette on the surface, 

 gardens are indebted to Mr. Wilson Saunders, to whom seeds in the manner of Cnicus acaulis of our pastures and meadows, 

 of it were sent by Mr. Farris, from the mountains of Peru. It | or the Carlina acaulis of our herbaceous collections, 



is perfectly new 

 to this country, 

 and will, no 

 doubt, become a 

 permanent orna- 

 ment in plant 

 collections. The 

 plant belongs to 

 the natural order 

 Composite, sub- 

 order Tubuli- 

 ilorse. Its gene- 

 ric character is 

 flower heads 

 many - flowered, 

 heterogamous. 

 Florets of the 

 ray uniseriate, 

 ligulate, pistil- 

 late, with the 

 five long sterile 

 filaments pro- 

 truding ; those 

 of the disk tubu- 

 lar, hermaphro- < 

 dite. Involucre ( 

 of many series 

 of imbricated 

 scales, the in- 

 terior ones nar- \ 

 rowest. Recep- 

 tacle shortly 

 hairy. Corollas 

 villous ; those of 

 the ray ligulate, 

 ■with a long tube 

 and oblong 

 three- toothed li- 

 gula ; those of 

 the disk tubular, 

 the limbs five- 

 parted, in oblong 

 lobes, shorter 

 than the tube, 

 erect. Style of J7> 

 the disk tumid at ^C~~- 

 the base, deeply Cr ^v 

 two -cleft, with £x 

 long revolute, 

 densely-hispid 

 branches ; that 

 of the ray with 

 short branches. 

 Seed-nut oval 

 furrowed, gla- 

 brous, concave 

 a the apex, 



swollen at the base. Pappus in many series ; seta?, equal, rigid, 

 hispid. 



There is but one species of this genus, that which we now 

 figure. It is a dwarf herbaceous perennial, growing close to 



The leaves are 

 of a dark green 

 colour on the 

 upper surface ; 

 the under sur- 

 face white with 

 pale green veins, 

 contrasting well 

 with the fine, 

 large, golden- 

 yellow composite 

 flowers about 

 3 inches across, 

 giving a lively 

 appearance in 

 midwinter when 

 other fljwers are 

 scarce. 



The seeds are 

 sown early in 

 spring, thinly in 

 a well-drained 

 pot, and placed 

 in a cool pit near 

 the glass and 

 moderately wa- 

 tered ; as soon 

 as the plants are 

 large enough 

 they are potted 

 singly in smaU 

 pots, placed a- 

 gain in a pit, and 

 allowed plenty 

 of air. When 

 the plants be- 

 come establish- 

 ed, as soon as 

 the pots are weU 

 filled with roots, 

 they are to be 

 repotted into 

 larger pots in a 

 mixture of good 

 turfy loam and 

 peat, adding a 

 small portion of 

 well-decayed 

 manure, after 

 which they are 

 placed in the 

 open garden 

 fully exposed to 

 sun and air dur- 

 ing the summer 

 months. In au- 

 tumn they are to 

 be removed to a cool airy greenhouse near the glass, where the 

 flowers soon begin to expand, and last a considerable length of 

 time in perfection. 



This plant has, we believe, not hitherto been known in Eng- 



