ON THE VITALITY OF SEEDS, | 21 
At Chiswick the whole of the seeds were sown in separate pots and placed 
in a pit heated with hot water. 
- These several treatments will at once account for the great difference there 
has been in many cases between the length of time the seeds required to 
vegetate, as well as the greater number of seeds which did vegetate at one 
place more than at the other, which will be seen on referring to the following 
statement of the results. 
No. of Seeds of each : : 
Species which vege- | Time of vegetating 
e tated at in days at 
Name and Date when gathered. A ee ae aE TTY 
Ox- |,,. Chis-} Ox- | ,.. 
ford, | Hitcham.| wick.| ford. Hitcham. 
— 
. 
Asphodelus luteus .........+0 
. Arctium Lappa 
. Angelica Archangelica 
. Ageratum mexicanum 
. Aster tenella , 
. Allium fragrans 
Bidens diversifolia 
. Biscutella erigerifolia 
. Borkhausia rubra 
. Bartonia aurea 
. Callistemma hortensis 
. Campanula Medium 
Centaurea depressa 
. Cladanthus arabicus 
. Cleome spinosa 
. Cnicus arvensis Bad in 1844, 
. Convolvulus major 
. Dianthus barbatus....... Seer 
. Echium grandiflorum 
. Eucharidium concinnum ... 
Euphorbia Lathyris 
. Gypsophila elegans 
Helenium Douglasii 
. Hebenstreitia tenuifolia 
Heliophila araboides 
Hesperis matronalis ......... 
« Hypericum hirsutum....... ne 
. Kaulfussia amelloides 
Koniga maritima ..,.......... 
Leptosiphon androsacea 
. Lunaria biennis 
Loasa lateritia 
ONS Ste Go bo 
Cnanthe Crocata 
. Phytolacca decandra ..... 
. Plantago media 
Polemonium czeruleum 
. Rumex obtusifolium ......... 
. Silene inflata 
« Smyrnium Olusatrum 
. Schizanthus pinnatus......... 
. Tallinum ciliatum 
. Tigridia Pavonia 
. Valeriana officinalis 
. Viola lutea vars 
