NOVEMBER, 1910.] THE ORCHID REVIEW. 33h 
morning, beginning two-thirds of the way up the bulb, and ending at least 
one inch below the junction of the leaves, which, at that time, showed 
merely a faint line of rot on one of them. The plant has not been 
overwatered, nor subject to any improper treatment, but had been to 
Manchester on show about a fortnight before it fell sick. The plant went 
down to Manchester packed in a special Show case, and returned in the 
same way. The plants were found to be undisturbed at both ends, and no. 
other plant has shown the least sign of any injury. We are very desirous 
of knowing the cause and nature of the disease if possible, as we had one 
other instance of it some time ago in the case of a valuable albino, which in: 
the same way became ill with the greatest suddenness. As far as can be 
seen from a surface examination the roots are quite healthy.” 
The presumption naturally was that the plant had been attacked by 
some parasitic fungus, but no evidence of this could be found on microscopical 
examination. It has been suggested that there may bea bacterial disease of 
Orchids, but there is no evidence that the mischief—whatever it may be— 
is infectious. We are rather inclined to suspect some local injury, which: 
was not detected until discoloration of the tissues set in. It is hardly 
possible that any fungous disease could have developed with such rapidity. 
We publish the information in the hope that some of our readers may 
be able to throw further light on the matter, and we need scarcely add 
that any considerable outbreak of this kind would be a very serious matter. 
CALENDAR OF OPERATIONS FOR NOVEMBER. 
By W. C. PrRIcE, OAKDENE, WEST DIDSBURY. 
Tuer month of November is generally associated with fog, and is not 
calculated to make the Orchid grower feel very happy, especially when he 
is located in the neighbourhood of a large town or city. In the country, a 
few years ago, fogs were not taken much notice of, as they were said to. 
be pure, and would do no harm. I do not think that theory would hold 
good at the present day—at any rate in England—for the distance between 
large towns and cities is not great, and the chemical materials given off 
from factories and chimneys will travel a very long way in a fog, and must 
have some deteriorating effect in any part of the country. I know that 
Dendrobium Phalznopsis, Lelia anceps, and Calanthes will drop their 
buds and flowers if a fog comes along even in the country. 
When a fog occurs shut all the ventilators and keep a slightly warmer 
temperature, but do not get the pipes too hot, and give all floors and stages. 
a thorough damp down. If this is done the resulting moisture will fill up. 
the laps of the glass and help to keep the fog out. I have tried keeping 
the houses dry, also moderately damp, but I find that the plants come 
through much better if the houses are kept saturated as above. 
