Observation 8. White incrustation. Innumerable mobile spores. No plants. Observation 9. White incrustation. Many minute algæ, but two sporangia of a pale pink color; another variety of color of gemiasma. Innumerable mobile spores. Observation 10. Gemiasma verdans and G. rubra in small quantities. Innumerable mobile spores. Observation 11. Specimen taken from under the shade of short marsh grass. Gemiasma exceedingly rich and beautiful. Innumerable mobile spores. Observation 12. Good specimens of Gemiasma rubra. Innumerable spores present in all specimens. Observation 13. Very good specimens of Protuberans lamella. Observation 14. The same. Observation 15. Dead Gemiasma verdans and rubra. Observation 16. Collection very unpromising by macroscopy, but by microscopy showed many spores, mature specimens of Gemiasma rubra and verdans. One empty specimen with double walls. Observation 17. Dry land by the side of railroad. Protuberans not abundant. Observation 18. From side of ditch. Filled with mature Geraiasma verdans. Observation 19. Moist earth near a rejected timber of the railroad bridge. Abundance of Gemiasma verdans, Sphærotheca Diatoms. Observation 20. Scrapings on earth under high grass. Large mature specimens of Gemiasma rubra and verdans. Many small. Observation 21. Same locality. Gemiasma rubra and verdans; good specimens. Observation 22. A dry stem of a last year's annual plant lay in the ditch not submerged, that appeared as if painted red with iron rust. This redness evidently made up of Gemiasma rubra dried. Observation 23. A twig submerged in a ditch was scraped. Gemiasma verdans found abundantly with many other things, which if rehearsed would cloud this story. Observation 24. Scrapings from the dirty end of the stick (23) gave specimens of the beautiful double wall palmellæ and some empty G. verdans. Observation 25. Stirred up the littoral margins of the ditch with stick found in the path, and the drip showed Gemiasma rubra and verdans mixed in with dirt, debris, other algae, fungi, infusoria, especially diatoms. Observation 26. I was myself seized with sneezing and discharge running from nostrils during these examinations. Some of the contents of the right nostril were blown on a slide, covered, and examined morphologically. Several oval bodies, round algae, were found with the characteristics of G. verdans and rubra. Also some colorless sporangia, and spores abundantly present. These were in addition to the normal morphological elements found in the excretions. Observation 27. Dried clay on margin of the river showed dry G. verdans. Observation 28. Saline dust on earth that had been thrown out during the setting of a new post in the railroad bridge showed some Gemiasma alba.