8i8 The Americmt Naturalist. 
elongated, usually paired, and take a marked polar stain , with a broad 
hyaline equatorial belt. 
T. J. BuRRiLL.— " Fermentation of Ensilage." This appears to be 
due to Bacillus butyricum, a motile bacterium, which is capable of re- 
producing rapidly in the high temperature of the silo. 
F. V. CoviLLE.—" Revision of the United States Species of Fui- 
David E. Day.— ''An Observation on Calamintha mittallii,'' noting 
certain suggestive variations, or reversions. 
Wm. R. Dudley. — "A Suggestion concerning Scientific Work," 
urging that attention be given to the study of the Fresh-water algae, 
which possesses economic as well as scientific interest. 
G. L. GooDALE.— " On a Convenient Method of Subjecting Living 
Cells to Coloring Agents." 
B. D. Halsted.—" Reserve Food-substances in Twigs," showing 
by means of drawings the distribution of the starch in twigs of various 
B. D. Halsted.— " Notes upon Stamens of Solanacese. " 
Thomas Meehan.— ''On the Position of the Nectar Glands in 
Echinops," "On the Epigynous Gland in Diervilla, and the Genesis 
of Lonicera and Diervilla," " On the Assumption of Floral Characters 
by axial growths in Andromeda catesbcei;' " On the Significance of 
Dio2cisni as illustrated by Pycnanthemum." 
F. L. Scribner.— " The Grasses of Roan Mountain." 
In the foregoing list it is impossible to give the substance of the 
papers without taking more space than we have at our command. This 
general remark can be justly made, that while there were a number of 
first-class papers, there were far too many short notes and isolated 
observations, which ought to have appeared in the Botanical Club, 
rather than in the Biological Section of the Association. 
In order to secure, if possible, a higher grade of papers, the follow- 
ing resolutions were adopted : 
Resolved, That one of the topics for discussion by Section F, at the 
meeting in 1890, shall be "The Geographical Distribution of North 
American Plants." 
Resolved, That the following appointments be made of members of 
Section F, who shall be requested to prepare papers upon special parts 
of the general topic of the Geographical Distribution of North Ameri- 
can Plants, viz. : 
Sereno Watson.— "The Relation of the Mexican Flora to that of 
the United States." 
