ECOLOGICAL NOTES II7 
In the next twenty feet the following entries were made; distances again 
omitted here although recorded in the field notes: 
Mertensia patch, Salix clump, North Box Elder Creek, Grass patch, Dodecatheon 
patch, Grass patch, Grass and plantain, Grass patch, Cow parsnip, Grass patch, Cow par- 
snip, Grass patch. 
Between Stakes 14 and 15 the conditions are similar. Here the following 
records were made: 
Grass patch, Carex patch, Grass patch, Collinsia, Mentha, Collinsia, Sedge and 
grass patch, Grass patch, Carex. 
Stakes 19 and 20 are high up the east side of the gulch. A list of the 
entries shows plants similar to those at the top of the gulch on the other 
side. 
Lichens on rock, Opuntia, Pentstemon humilis, Lichens on rock, Pentstemon humilis, 
Grass, Geranim, Grass, Sage, Senecio, Grass, Lichens on rock, Senecio, Senecio, Sage, 
Draba, Sage, Sage, Grass. 
This gulch study is published to give an idea of the differences in the 
plants along the slopes and in the bottom of such a depression. Of 
course everyone knows that such differences are manifest, but an accurate 
statement of conditions in a definite place may be worth while.t An 
examination of the list of plants printed above will give a fair idea of the 
species represented and of the character of the plants in the drier sloping 
parts and the moister gulch floor. 
t No originality is claimed by the writers in the method of this study. Such ‘‘transects’’ are fully dis- 
cussed by Professor Frederic E. Clements in his important work Research Methods in Ecology, pp. 176-181, 
1905. 
