presented three or four sporangias in their blood. Dr. Hodgkins, some in
urine. Dr. H.'s friend with chills, not positive as to ague. No plants
found.

Observations in East Greenwich, R.I., Aug. 16, 1877.

1. At early morn I examined greenish earth, northwest of the town along
the margin of a beautiful brook. Found the Protuberans lamella, the
Gemiasma alba and rubra. Observation 2. Found the same. Observation 3.
Found the same.

Observation 4. Salt marsh below the railroad bridge over the river.

The scrapings of the soil showed beautiful yellow and transparent
Protuberans, beautiful green sporangias of the Gemiasma verdans.

Observation 5. Near the brook named was a good specimen of the Gemiasma
plumba. While I could not find out from the lay people I asked that any
ague was there, I now understand it is all through that locality.

Observation at Wellesley, Mass., Aug. 20, 1877.

No incrustation found. Examined the vegetation found on the margin of
the Ridge Hills Farm pond. Among other things I found an Anguillula
fluviatilis. Abundance of microspores, bacteria. Some of the Protococci.
Gelatinous masses, allied to the protuberans, of a light yellow color
scattered all over with well developed spores, larger than those found
in the Protuberans. One or two oval sporanges with double outlines. This
observation was repeated, but the specimens were not so rich. Another
specimen from the same locality was shown to be made up of mosses by the