United States Magazine store grounds. Observation 1. Margin of Eastern Branch River. Substance from decaying part of a water plant. Oscillatoriaceæ. Diatoms. Anguillula. Chytridium. Dirt. No Gemiasma.
Observation 2. Moist soil. Near by, amid much rubbish, one or two so-called Gemiasmas; white, clear, peripheral margin.
Observation 3. Green deposit on decaying wood. Oscillatoriaceæ. Protuberans lamella, Gemiasma alba. Much foreign matter.
Mr. Russell, Mrs. R., Miss R., residents of Magazine Grounds presented no ague plants in their blood. Sergeant McGrath, Mrs. M., Miss M., 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.