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‘NOTES ON SCIENTIFIC RESEARCH. na . t  BOS 
Rearing roses from seeds requires a good deal of gardening experience. The 
‘seeds lie in the ground for up toa year until they germinate. It is recommended, 
on the one hand to sow them already in October after the harvest; on the other, to 
put them into moist sand, saw-dust, &c., or to let the fruits rot and get a ae to 
wash the seeds out in spring and to sow them then. 
: The rue (Ruta graveolens, L., Rutacece) is propagated by dividing the rhizomes, through 
x slips and through seeds. The seeds on the market are generally of little value. The 
"germination takes four weeks and is favourably influenced by light. The seeds must be : 
strewn on the surface, rolled in, or pressed down with a plank. 
a Generally speaking, the seeds of umbellifere germinate fairly quickly, but there are 
_ exceptions. The influence of the light is favourable in most cases, so that the seeds 
_ should not be put too deep. As many of them soon lose the faculty to germinate, the 
~ seeds found on the market frequently are not worth cultivating any more or do not 
_ germinate at all. 
* Dill seeds (Anethum graveolens, L.) germinate already after a fortnight, especially 
under the influence of the light or if exposed to changing temperatures. 
+ Angelica seeds (Archangelica officinalis, Hoffm.) lose their germinative faculty rather 
— quickly, comparatively speaking’). 
i Caraway seeds (Carum carvi,L.) germinate fairly quickly. The germination lasts 21 days. 
ad As to the germination of water-hemlock (Cicuta virosa, L.) mowing seems to have ~ 
_ been published, so far. 
_ Hemlock seeds (Conium maculatum, L.) germinate very slowly and oe much 
— the light. — 
The conditions and duration of the germination of coriander (Coriandrum sativum, L.) 
P3 “are the same as for caraway. 
= Fennel seeds (Feniculum vulgare, G.) start genminating quickly, the whole process 
re _ being completed after a fortnight. 
é Regarding lovage seeds (Levisticum officinale, Koch) the conditions are the same as with 
_ angelica. Bought seeds had almost entirely lost their germinative faculty. As it decreases 
so rapidly, it is best to sow the seeds soon after having gathered them, in autumn. 
b The water-fennel (Oenanthe aquatica, Lam.) is propagated either through runners from 
_ the root-stock, put in the mud of drained ‘ponds, or through seeds, sown in very moist 
“places, immediately after having ripened. Gentner has not been able to find any notice 
_ concerning the conditions of germination. 
The seeds of master-wort (Peucedanum Ostruthium, ‘Koch) are sown soon after the 
_ harvest, the same as angelica and lovage seeds. No further particulars seem to be known. 
Parsley seeds (Petroselinum sativum, Hoffm.) generally germinate completely after 
a fortnight. 
Anise seeds (Pimpinella Anisum, L.) and probably those of Pimpinella magna, L., and 
| Pimpinella saxifraga, L., have a quick normal germination. 
v3 Marsh-rosemary (Ledum palustre, L., Hricacee) only germinates in the light, but is 
_ scarcely cultivated, as it grows in profusion in parts of the North-German moors. 
A good many Laliate are generally not propagated by seeds, but through runners 
or slips, or by dividing the root-stocks e.g. hyssop, lavender, balm-mint, peppermint 
_ and spearmint. The seeds germinate rather slowly. Many of the native Labiate require 
light for germinating and are favourably influenced by a cool temperature, so that it 
is advisable to strew the seeds on the surface. A considerably part of the seeds on the 
gt 
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gH ED Ring 
P 1) Comp. B. Pater, Pharm. Post 1916; Report October 1917, 110. 
