246 
Journal of Mycology 
[Vol. 9 
on Lycopus americanus, the work being done by Arthur and re¬ 
ported in the Journal of Mycology, Volume 8, page 53, June 1902. 
But the same experiment is also found in the following: 
(2) Scirpus atrovirens (Aecidium lycopi Ger. on Lycopus ameri- 
canus), see Puccinia angustata Pk. from Scirpus atrovirens. [Arthur.] 
It will be noticed that all of the facts are given in this cross- 
reference that are contained in the first paragraph reproduced— 
obviating the necessity of turning to another entry—except that 
the place of publication is not here repeated, which is always 
given where the first word of the entry is the name of the species 
experimented with, i. e., whose spores were used as culture mater¬ 
ial. To put this into a sentence it would be: From Scirpus 
atrovirens culture material was taken by means of which there 
was produced Aecidium lycopi Ger. on Lycopus americanus, said 
culture material being teleutospores of Puccinia angustata Pk. 
taken from plant first named, experiment by Arthur. The third 
entry for the culture under consideration is as follows: 
(3) Aecidium lycopi Ger. on Lycopus americanus, see Puccinia 
angustata Pk. from Scirpus atrovirens. [Arthur.] 
The same being translated is: Aecidium lycopi Ger. was 
produced on Lycopus americanus by using teleutospores of Puc¬ 
cinia angustata Pk. taken from Scirpus atrovirens, experiment 
by Arthur. But a fourth entry is made in the following form: 
(4) Lycopus americanus (Aecidium lycopi Ger.) see Puccinia an¬ 
gustata Pk. from Scirpus atrovirens. [Arthur.] 
This would be first found in case search was made for Lyco¬ 
pus as a host plant on which an aecidium accurred. The entry 
would be read: On Lycopus americanus was produced Aecidium 
Lycopi Ger. with teleutospores of Puccinia angustata Pk. taken 
from Scirpus atrovirens in an experiment by Arthur. 
In case uredospores or secidiospores were used these words 
(or Uredo or Aecidium) immediately follow the name of the 
species in each of the entries. 
It will be noticed that “from” is always to be preceded by 
culture material, and that “on” is preceded by secidia, etc., pro¬ 
duced by the inoculation. 
Brackets are used for hosts, when the indexer does not find 
printed in immediate connection the items so enclosed, but deter¬ 
mined the same from the context or other ample evidence derived 
from the author’s publication. Thanks are extended in advance 
to mycologists who will kindly notify me of additions or correc¬ 
tions that should be made. 
A summary or list of Alternate Forms follows the first part 
of the Index in which are given for quick reference the genetic 
connections established by the cultures recorded, listed in alpha¬ 
betical order under two heads. Thus the fact demonstrated that 
