4 REPORT OF THE CONFERENCE ON GENETICS. 
Royal horticultural Society. 
REPORT OF THE CONFERENCE ON GENETICS 
AND ALLIED SCIENCES. 
THE Council of the Royal Horticultural Society having decided in the 
winter of 1904 to hold a further International Conference in 1906 on 
Genetics in continuation of the two previously beld, in, London and at 
New York, a preliminary circular was issued in April 1905 inviting co- 
operation. This was followed in February 1906 by a letter of definite 
invitation together with an outline of the programme as far as it had then 
been settled. In May 1906 a final and complete programme was sent 
out. These and other official and formal documents are reproduced here 
(even such trivial ones as the menus) as being of some historical interest 
and also because they may prove suggestive and possibly helpful for 
future similar meetings. A notice was also sent out to British amateurs 
and nurserymen drawing attention to the Conference and requesting 
them to exhibit hybrid or cross-bred plants (whether in bloom or not) 
with their parents. 
ROYAL HORTICULTURAL SOCIEis 
VINCENT SQUARE, WESTMINSTER, 
LONDRES. 
Février, 1906. 
MOonSIEUR, 
Deux Conférences Internationales sur L’HYBRIDATION des 
PLANTES ont été déji tenues, dont l'une A Londres en 1899, sous les 
auspices de la Royal Horticultural Society, et l'autre aux Etats-Unis en 
1902, sur l’invitation de la Horticultural Society de New-York. 
En yue du progrés considérable accompli récemment dans cette 
science, la Royal Horticultural Society de Grande-Bretagne se propose de 
tenir la troisitme Conférence Internationale 4 Londres, ayant trait aux © 
mémes questions, commengant Lundi le 30 Juillet 1906. I est str 
qu'une telle Conférence offre aux personnes scientifiques et pratiques des 
