Observations in Washington, D. C., September 5, 1879, 8:35 A.M., Boston
time, near Congressional Cemetery.
1. Seized with sneezing on my way to cemetery. Examined nasal excretions
and found no Palmellæ.
2. Pool near cemetery. Examined a spot one inch in diameter, raised
in center, green, found Oedegonium abundant. Some desmids, Cosmarium
binoculatum plenty. One or two red Gemiasmas, starch, Protuberans
lamella, Pollen.
3. Specimen soft magma of the pool margin. Oedogonium abundant, spores,
yeast plants, dirt.
4. Sand scraped. No organized forms but pollen, and mobile spores of
some cryptogams.
5. Dew on grass. One stellate compound plant hair, one Gemiasma verdans,
two pollen.