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De Ma 
tently Poa, bat oasa I jerga to sa 
Smo 
iti 
the Horticultural Society oe 9— co 1846, but it is 
dated “Nov. 2 22,1845.” It isan exposition and critique 
“ihe views advanced up to that 5 asi ith arguments 
gm from the published facts and the authors 
servations support of view he adopted 
fter Stating the different opinions he says: ‘* I m 
Sandidly confess, that with a _ — of 
Bhilosophic doubt where such aut! thori ange 
ye the opposite side, I believe the pony shecey to 
g= right one 2 rm 18). After the description of 
Men Pecies, which . Berkeley from 
Tontagne’s two 
Published i 
THE 
DECEMBER 19, 1874.] 
GARDENERS’ 
CHRONICLE. 
773 
ROYAL AGRICULTURAL 
SOCIETY AND THE POTATO DISEASE. 
In your issue of D you report an address by 
Professor Dyer on the ' Po tato disease, and some 
observations made on that address by Dr. Masters, at 
Ong of the Horticultural Society three days 
s “thought the Professor m 
m a courteous 
sister sey y shkicely ignore both 
i Berkeley and the Soc 
Iam o con ider. Hs tter of courtesy if 
need present I aer £3, say that the ie, 
ment with "reference di ato 
disease i is withou Goi Bach 
There is no difficult 
in establishing this assertion, 4 
It needs only the 
of “a Sagging paper of 1846, to which 
asters refers, and which Professor pra appn 
say Dr. Master. 
would not have made the Ha 
oia te 
oa esters | tie entitled “f Observations, 
and Physi ological, = the Potato Murrain ; 
iS published in the olume of the ¥ournal of 
nous pee de nommer Botrytis infestans 
surtout le dessous des feuilles de la Solanée, qu'il 
c h 
ave par myself 
h 
of in t es. It was ne intentio 
published them himself, but at my request fe gave 
H the ee placing his mately in my hands ” 
Ephes pres ee ea H is one by Morren, publish 
in thie As ales d Agric, de Gand, be 184 tq 28 fs 
292, entitled “t Notice sur le 
le oo mpignon des Pommes de a. In this D 
a | 
Morren, speaking of the disease, —* Nous 
pericoae sincèrement quelle est due au Botrytis devas- 
tatrix, Lib.,”” a synonym of B, infestans, Mont. 
ay 
ay 
igi 
a 
Ka 
FIG. 156.—DECORATION OF A ROOM FOR A PARTY, 
Drawings of the fungus, se wen Hh es fr 
plants the ider axle pi 
mycelium among the cell rH? ie ae = or en i 
this pepene oF pea with figs of the fruit, which he 
more ac than those by Montagne, publi ished in 
Mr. Berkeley's s paper. 
Mr. Berkeley further rar y the opinion of Payen— 
“The notion that s the effect of the Bio 
was published in the 
Hort. de Paris, for November, 1845. 
ey mee ères de 
dune vegé cryptogam ique 
Suiresiuites ince La de la tige dead les tubercles, 
se sont développées entre et à l’intérieur des cellules, 
se no t de la fé cule‘et d'autres prin ipes im- 
médiats p e ee tissus environnants. 
I do he go beyond Mr. Berkeley’s ae to z 
aa m: tement. ese extracts pub- 
ed before “November 22, 1845,” and thestatements 
perake in which are estimated by Mr. Lei 
AE that he wae tt, and never claimed for 
Botrytis PENR pe ou | 
in the mother 
no traces 
self to be, the disc u ar Ee 
aiid chad dP as be wad and publisher of the origin 
„Though this is already a longer communicati 
T intended, I must ask your TERS nication than 
n 
rers óf them 
Dis the paper of Mr, B 
‘t eleariy TRTE y oa aie? was due | 
fungus, i E eo i aid ; —"'To my own ap 
lish themselves 
n'O 
8 
ap 25). 
arguing on the appearance of the Botrytis onthe tuber d 
says: ‘‘It should seem certain, then, that the myce- 
ae £ ue 
u 
"i 
i " f 7 
be 
ae 4 i 
ty arises from the uri 
as some rae = total absence € of m in an earl 
stage of disease. I have satisfied myself of its 
ovine? , but not uniformly. 
cu 
springs from some contagious ek. we can form no 
probable conjecture, paee g by mer E aia D ; but if 
c fungus, it 
from our r experience of other productions,” Te. (p. 29). 
And ak wtot purely botanical 
rt o "the eae, anes, mil sree fen of the 
parasite which has been so a Hink an attendant upon 
"i disease” „ie 29). 
rofessor Dyer 
3 
8 
tly reaching the ters, ers, involved the — sien 
Sat The disense, È : 
cells of the fecula. . 
of mycelium are visible in this stage ” 
