YELLOW DISEASE OF HYACINTHS. 339 
Table Showing Sensitive and Resistant Varieties of Hyacinth. 
Hyacinths much subject to the yellow disease. Hyacinths very resistant to the yellow disease. 
| | 
Charles Dickens, single rose | *Robert Steiger, single red 
*La Grandess, single white Baron van Tuyll, single rose 
*La Neige, single white Moreno, single rose . 
Captain Boyton, single light blue Baroness van Tuyll, single white | 
*Czar Peter, single light bluet _ *Grandeur a Merveille, single bluish white | 
| *Grand Lilas, single light blue La Franchise, single bluish white 
*Lord Derby, single light blue *Grand Maitre, single light blue 
*Hermann, single yellow *La Peyrouse, single light blue 
*La Tour D’Auvergne, double white Regulus, single light blue 
To this list the following should be added *King of the Blues, single dark blue | 
as aresultof the additionalinquiry respect- *Marie, single dark blue | 
ing discarded sorts already mentioned: King of the Yellows, single yellow - 
La Précoce, single white Yellow Hammer, single yellow 
Marie Stuart, single white | Princess Royal, double red 
Miss Nightingale, double white Boquet Royal, double rose. | 
*Mont Blanc, single white La Virginité, double bluish white | 
*Orandates, single light blue Crown Prince of Sweden, double dark blue | 
Prince de Taillerand, single light blue 
*King of the Blacks, single blue black | 
*La Citroniére, single yellow 
Minerva, double yellow “wu 
{Found also accidentally by the writer in 1897 to be specially sensitive to pure-culture inoculations of Bact. 
hyacinthi. 
For comparison with the above table I have compiled the following list from Wakker’s 
Dutch report for 1885, the same being the opinion of six hyacinth growers of that time 
respecting susceptibility to this disease of 34 of the 35 varieties mentioned in the preceding 
list. When the sum is less than six the other growers made no report. 
Number of growers reporting the variety as: 
Variety. eae) Se as, a Sa 
} Very ible. Inter diate. Not susceptible. | 
—} 
| Charles Dickens, single rose...............6% 
| La Grandess, single while ...........0.00006. 
| PMC INCIRE, SINGS TUMEEE occ cies css sc cavesin tens 
| Captain Boyton, single light blue............. 
| Czar Peter, single light blue...............-.. 
Grand Lilas, single light blue.............++: 
Lord Derby, single light blue................ 
Hermann, single yellow.............02..--5- 
| La Tour d’Auvergne, double white............ 
| La Précoce, single white. ........-.000cceeee 
_ Marie Stuart, single white...........-+.00-4- 
| Miss Nightingale, single whilte............... 
be MaOnD Blase, single WhHE. o.oo ce ae 
Orondates, single light blue.................. 
Prince de Taillerand, single light blue......... 
King of the Blacks, single blue black.......... 
La Citroniére, single yellow..............44. 
Minerva, double yellow... ..........0.002005- 
Robert Steiger, single red... eee ee 
Baron van Tuyll, single rose................. 
PIERCII OONINE FUSE 55 wag os Bie a oe aatatee e's 
Baroness van Tuyll, single white.. mee 
Grandeur a Merveille, single bluish white... .. 
Grand Maitre, single light blue.............. 
| La Peyrouse, single DINE 0828 6 Sih ree 
| Regulus, single light blue.................... 
| King of the Blues, single dark blue........... 
Miasig, $gle dark blue... eee cbt 
King of the Yellows, single yellow............ 
Yellow Hammer, single yellow............... 
Princess Royal, double red...............4.. 
Boquet Royal, double rose.................. 
La Virginité, double bluish white............. 
Crown Prince of Sweden, double dark biue..... 
MPLTILIIVITID ELIT ewe Lolo agtte ta 
Ce id i OD ec DS 
