1899] BACTERIAL DISEASE OF THE SUGAR BEET 179 
isolated, resembling the first in form and arrangement, but 
smaller, being 1.5 w—1.75 w long and 0.7—0.8 # broad. This form 
produced an acid reaction on different media, did not liquefy 
gelatin, and grew better at 12°-14° than at 22°. Mr. Busse is 
inclined to believe that the second form is a variety of the first, 
which he designates as Bacillus Bete. He has demonstrated that 
this second form produces the disease known as dbacteriosis gum- 
mosis, and believes that this germ is a saprophyte which becomes 
a parasite in the tissues of the beet. 
Erwin F, Smith,‘ in speaking of the bacterial diseases of the 
sugar beet as reported from Europe and America, is of the 
pinion that the diseased condition of the beets studied by ° 
Arthur and Golden is due to some other cause than a bacterial 
one. He states that it is highly improbable that the root could 
be attacked by an organism which invades its tissues and yet 
does not break them down. Mention is made of the fact of the 
Presence of small bodies in the tissue of healthy beet roots 
which have the appearence of bacteria, but which are probably 
“ystalloid bodies. A paper by Dr. Smith was presented at the 
‘pe of the Society for Plant Morphology and Physiology 
“ i eae 1897, calling attention to the “existence, in parts 
nia nited States, of a disease of the sugar beet resembling if , 
a €ntical with that described by Kramer and Sorauer in 
91-2, and more recently by Busse.” 
ne ae fall of 1896 I had the opportunity to continue the 
I a 10n of the bacterial disease of the sugar beet observed 
study ag eae ts Much of the value of my experimental 
Sheen disease is due to the suggestions of Dr. Arthur, to 
l also desir indebted for kindly help and criticism of my work. 
fessor a ” Press my gratitude to Professor Burrage, Pro- 
°n, Miss Golden, and Mr. H. L. Bryan, also of 
ty, for important suggestions. My investiga- 
€ been continued from 1896 to the present time, 
NO positive evidence that the sugar-beet disease 
‘ © Same as that described by Sorauer and Busse 
Sviry EF. he 
‘Urdue Univers; 
tions, Which hay 
ie Fesulted in 
0 Indiana is th 
Nat. 30:716-729. Sept. 1896. 
