NOTES, 
ON THE INFLUENCE OF THE TEMPERATURE OF 
LIQUID HYDROGEN ON THE GERMINATIVE POWER OF 
SEEDS 1 . By Sir William T. Thiselton-Dyer, K.C.M.G., C.I.E., 
F.R.S. — The Comptes Rendus for August 28 (p. 434) contains a com- 
munication from Professor Dewar to M. Henri Moissan, ‘relative 
a la solidification de l’hydrogkne.’ It concludes with the following 
sentence, which may be easily overlooked : — * Des graines refroidies 
dans de Fhydrogbne liquide conservent toute la propridtd de germer/ 
This is the first announcement of an interesting experiment in which 
Professor Dewar did me the honour to ask me to assist him. He has 
further suggested to me to put on record the facts, as far as they came 
under my observation, and any physiological conclusions to which they 
seem to point. 
With this suggestion I have no alternative but to comply. Botanists 
will naturally expect some more detailed account than is contained in 
the brief announcement which I have quoted. But as my share in the 
research has been of the smallest, I should have much preferred that 
Professor Dewar should have given the result of the whole investigation 
himself. 
When Professor Dewar first suggested the experiment to me, he 
pointed out that it would be a costly one, that it would only be possible 
to operate on very small quantities of seeds, and that the number of 
kinds must also be few. 
1 From the Proceedings of the Royal Society, vol. lxv, 1899. 
[Annals of Botany, Vol. XIII. No, LII, December, 1899.] 
