Extracts. — Hvrtivu/ture. 
515 
shaped, very dark green or purple; when mature, reddish yellow, and grows 
to a large size. Pips large and nearly flat, sometimes a little depressed in the 
centre. Scales covering nearly half the pips, and ending in short blunt points. 
Flesh white, opaque, sweet and juicy, without much flavour, rather soft and 
melting. Crown large, leaves numerous and spreading. — Tratisact'wns of the 
Horticulturai Soc'ffii, / ol. f. Part /, second ser/'ex. 
(to be continue;)) 
Improved Boiler for ITbatikg by Hot Water. — Mr. D. D. Neeve, late 
piincipal clerk to Mr. Tredgold, who wrote iii the " Horticultural Traiisaclioiis," 
has found that a long rectangular boiler is preferable to a square or circular one, 
in as much as the bottom receives more he;it on account of the fire being retained 
longer. He has lately had some coiistrnuted of the patterns shown in fig. 88 and 
89, and has found thsni to answer his highest expectations. The heat is raised 
in much less time, and with less fuel, than witii u square or circular boiler^ The 
dip at the end of the boiler, [fig. 89, a'] has a tendency to prevent the flame from 
passing so rapidly over the bottom as it would do on a straight one. The upper 
part of the flue piissiiig round the boiler is entirely covered by the upper part 
of the boiler. — (iitr(h'ncr'')i Magazine. f 
To Prevent the Sphouting, &c , of Store Onions di'ring Winter. — 
Apply a heated iron for u few seconds to the nozzle of the onion, whence the roots 
protrude, and it will be an eflectual mode of preserving them. — Gard. Mag. 
To MAKE Old Seeds Germixate. — Put them in a bottle filled with oxalic acid, 
let them remain there till the germination is observable, which generally takes 
place in from 24 to 48 hours, then take them out and sow them in the usual man- 
ner. Another way is to wet a woollen cloth with oxalic acid, on which the seeds 
are put ; it is then folded up and kept in a stove. By this method sniall and hard 
seeds will germinate equally as well as in a bottle. Also very small seeds are 
sown in pots, and placed in a hot-bed, and oxalic acid, much diluted, is applied 
twice or thrice a day till they begin to grow. Particular care must lie taken to 
remove the seeds out of the acid as soon as the least vegetation is observable. By 
this means seeds from 20 to 40 years old have been found to grow, whilst the same 
sort sown in the usual manner did not grow at all. M. Otto; Pru-^s/tr/i Gar- 
dening Sociefi/. — Gard. Mug. 
The ZiZANiA Aqlatica, or Canada UiCE, has been cultivated in the Botanic 
Garden at Schoneberg, near Berlin, since 1818. The seeds were receJTed from 
