844 THE GARDENERS’ CHRONICLE. [N° 59, 
had not the works already extant on this subject een | Rages the hypotheses adv: — to explain the ease because | the ascent will A avd Place after the pipes = 
perva very = ngerous errors. 3” | w h whic circulation may be maintained, there is one raction vf heat during their 
It has been 
stracti 
passage ‘throu gh the yes in the tank. 
the appliation 0 of those element is t more complicated ak posed ie the rapidity of the circulation will be ssh ees this is done, an adequate c circulating force must 
cases, nt out the principal considerations in each the oh is smaller, in consequence of the arger te / _—_ red by the general arrangements of in system, 
on « which Success must t depe: nd. porti cooling surface presented by small pipes y be taken probably as a sufficient rule that us 
relation to - Pome of water they contain. This, 9 ; aq’ han prt 
gravities of the ascending and Prag pone it is | however, is a n which requires only to be pushe f the vertical d f the sy and not so muct 
clear that where power alone has to be considered, the | an tanger" oa ean its o futation. If the cire fi e-sixth of 
P rae ne et more easy and rapid in a two: oes 
of the boil t possible evel, then to as "in a mayo pipe, it would follow that it It ‘ie hardly possible to quit this subject without 
apply h a length of hovieontal pipe at that hich level paar Ps still more easy Sy a rapid in a pipe of one-half | noticing the system ae hi gh-p ressure peg oe bepreee 
Id exh l and - all iameter; unless indeed there | by Mr. Perkins. shane er has been, ani a matter 
to descend at once from that level to the hathie a point at which t e effect hag pa a goa , di- | of so much angry controversy, ie it had Slee il 
boiler. “The only modification whic ch this is requires, arises | oe og on —_ side, whic! would be d alt to | be left to the arena which it has now chosen sen, namely, - 
fro p T a which also iat, that the creation columns of the Times newspaper. rer Ainger, 
to be mixed with the water, and for which reason it is | will be more parenlle as the Dp are longer, must e 
desirable to place the ipes no} not _ level, _ but with a | dently share the sam: chen We as THE CALCEOLARIA. 
slight inclination; so t! There is another pre oer gard to the size th which 
at which all the air will pe- of pipes also i in ‘fa vour "of ‘mal diameters, ae it is ore particularly directed fe paca of Friend years 
there must be two or more Sek points, each being th the | said that — ted than with a ames fry rs their floral beauties, the Calceola- 
highest, with reference to a certain portion of the appa- | a large quantity. " This is fags game y person - favourite, a cot sa 
ratus, and each furnished win er a pipe for the escape of | who anion wetely boiling mater, “toes well to heat | stance of his su _— The effects resulting 
air; all which pipes must evidently boghnagpet ae any = as much as he wai ia Fang ore. But in our pa culture and cross hybridiaton a are observable in the 
Pp od. Naat sion e feeding | case we want not to heat w: ag oy ng ere deca. improved form, colour, and my of the flowers, ty tie 
rn. and to say that this ol beet is ; promot ted by ral character of the plan this now popular 
The annexed figure will represent the principal features smallest dang poe ¢ water is absurd. Like gins forms one of the fore cele the green- 
pba ap gar nt. From the mee pel the boiler 5, other n the splendid specimen: e witnessed at 
ascends a marked with an up aaa fier pi contain- he different eae t meee it we tly the high esti- 
flow aay ~9 thesummit aioe a a ing very re water, they will doobties:, te: every =| | mation in which it it is be 
urn to the tae bottom of o 
description; the feeding- 
o apply itself to the top of the descend- 
the boiler, need no farther 
cistern c is made to 
& 
f & 
5 re 
re 
heated; but they will also furnish a very smal 
t (sth Rin ‘Gk. 
eating power on which the conservatory can draw, and ency it has to sport into palit ‘varledee! will no doubt 
the effect will be correspondingly feeble. ts short, the 
whole of the Lge sarc notions in favour aah small pipes It was in 1823 that C. corymbosa as raised from ante 
are ee ce fallac' It is said panes ae ntlgen a sak rted seed, and soon after, e ayes nneuded was intr 
so much surface a. m oportion to the and thai ese were the original pare! ip Gree re hyi R 
since, chenslors they ere ted uch 
etrospective 
t produce a greater effect | the apparently unpropitious patie from which « pa 
upon the plants. But this is is “descending to conjectures sent s splendid greenho' use varieties were derived ; and for 
below fi of t original flowers, 
surface. If, as is ‘alleged, the large ~ have a sluggish 
contrasted with one of Mr. Green’ 8 latest noveltie s, which 
of the 
circulation lose heat slowly, it follows that 
if so, 
they 
ra. Fag will have the pleasure of seeing his pie at 
«Spe this "subeee Mr. Green has favoured us with the 
‘ounds. 
every part, exposed to very hot pipes, which is exactly | follow 
what he wants. He does not care whether there is a slow | C. C. corymbosa and < arachnoidea, which produced many 
even if there be none at all, so of the herbaceous age tare several 
that the p Fas hot ; “becaue i wll not be ee that se improvement, I selected he strongest, 
Se ne ze P ipe will radiate beri as wel pipes | largest, and most distinct blooms, a’ them Hee 
'y have the same sort o . vi m: et hich most of my shrul 
ing pipe, so that all the cold water supplied to make good If it should be bis. that the sluggish circulation See beer " , Specimens of cof-ay shrbhy fre- 
and leskage ots with the greatest possible produ uced b: y large pi uses the he at to be dissip ate d quently exhibited at the Gardens of the Horticultural So- 
effect in increasing the d of the descending column. ciety, ter convenience in describing 
_ Ef it be required to liscon the line of pipes inorder | goes to; the heat must be oe patie in Sho first | the di t ki le to arrange 
to a doorway, or other obstacle, it is best done by an | instance by the boiler, and ee ee cause an t in the | them in four classes, viz. 
ascent, as shown by the dotted lines m; which, if the | boiler and the flow pipe. wat the circu-| jf, White or yellow grautid, with a large spot of various 
pipes he kept close at bend, s0 as to form a syphon, | lation be supposed to Sis place up and down 
2 ¢ rise higher than feeding-cistern and ai -pipe ; pipe shown in the former » pre- same grounds, with scarlet or other stripes. 
I rature 
h the 
mae two jostling currents of nearly equal te: 
small 5] 
2. The 
ry Spotted on all gr 
il cacan, 
mpera' 
stop ul creer. It is Space to the easy passage round the pipes, 4. Selfs of 
seep epee eat Pena arg poe and air-pipe a, | it would | be a very remarkable effect of large pipes. if | e pro which constitute perfection in the 
ae as 
fF tk Ms TY? F ceolaria consist in the lip ip forming perfect cil, ee 
air. Every such ascent and Acnaath gc ethates. Sr 1 of the se pie se there cat ‘e e rage would, however rosa sae bs in: “ae cata mre Tall eae the 
kts A y resenting a convex sw 
force of some amount in favour of I t; not | hot; vand if, as is also Pr it lose heat very slowly, it fours should be clear and distinct, wit 
perbap eae: hot to the’end of the system. In rich, vel tgirls the peers nd calyx 
ae bends, because the temperatures of the | tact, the opinion in favour of small pipes will not eae d full, with the flower-stems short and 
ony See Buscar ws ng va gy examination ; while the ght reservoir of water, fur- strong. 
the best ; the flowers are 
in i the fires, acting in this respect “samehag like a ae 
A similar prejudice in favour of g getting quickly rid of 
sections, none of any advantage to balance 
: against the Sng ana and simplicity of the circular section. 
extended to small boilers, and it has nad made a boast 
that the boiler for so many hundred feet of pipe has con- 
yn igloo water. The consequence 
the surnlus 
ee 3 
sie fe gd oy ptm bat it may 
may Lag lyr as litle conclusive.” 
=e a the pipes, with the view of 
Refering fo 
of represent the bulk of a 
water at rogl ame hegel chardlomee’ 
Id afterwards oc 
the pone ear ys geod “op cartier ng than the re- 
mainder. If cocks or valves are introduced in any partof 
the pipes, them, if possible, Preserve the full water- 
uch 
large and de beuiatl ifal as tien herbaceous sorts; 
tor: are ‘much sae of ATA are capable of 
made much finer specimen p) 
The following list, arranged (iii 
ae ng a amg wc, 3 
one end to theother. It is true that salt 
ova lca rein ci | We w te pent an ae ge 
ose just mei 1. White ith large spots Of Ter 
the power is from an ; Shrubby.- Speclose, Grandis, Mirabilis, Magn’- 
£ th faces, with refer- et § Sultan, Criterion, SP& 
Sans ts ralneig poner, ton boc sometimes insisted ‘ Climax (Green’s). Half Sh.—Prince Albert, 
ese are are refinements of little value. The differe differences Miss Ant wae 
lie surfaces, and these _are not likely to be adopted. 
