Pamphlets on Protozoology (Kofoid Collection)

Front Cover
1878
 

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Page 5 - to investigate and report a permanent plan for reclamation of the alluvial basin of the Mississippi subject to inundation," of which commission I was president.
Page 120 - The white rock appears to be nearly horizontal; it contains, more particularly in the upper portion, numerous nodules, varying in size from that of a walnut to that of a cocoanut.
Page 5 - The department of medical zoology of the School of Hygiene and Public Health of the Johns Hopkins University...
Page 12 - Army, 1870), and but for the, clew to the general facies of the fauna furnished by that investigation, and the fortunate circumstance of my having the original material still in my possession, the present list of species identified with certainty must have been materially smaller. But a few recognizable forms remain undetermined, and may hereafter be identified. For much assistance and valuable suggestions in this connection, based upon personal observation in the imperfectly explored region of the...
Page 7 - Tab. in, fig. 3. thin but chemically homogeneous organic substances being impermeable to certain gases, while permeable to others, a good deal of physiological interest is involved in the study of this protoplasm-membrane, and its relation to the swamp-gases. The particles of the nubecula are uniformly globular. After repeated cross-segmentations, these undulate fimbriate bodies, always revolving about the long axis (while evidently traveling onward by the action of the ciliate mouth) divide lengthwise,...
Page 24 - G, and may be fancifully compared to a pair of breeches with a hat-brim for a waistband, and with legs that end in closed, tapering, and forked processes. Dark granules, apparently of clay, seem to have washed into these processes through the open waistband end. Organism J is like a conical hat with a narrow brim. The latter is greenish and translucent, but the sides of the conical crown have radiating lines of foramina. It measures -\-4 of an inch across the brim.
Page 102 - There exists, but not invariably, a long, spindle-shaped, and rather curved process of a granular tissue, similar to that of the cushion (fig. 8, c), also attached by one extremity to the upper surface of that body, and having at its unattached extremity a clear space, which opens externally by a small oral aperture. This body is often absent, and I have seen it attached alone to the Sertularia. I am therefore inclined to consider it either a gemma or a parasite belonging to Gregarinae. Although...
Page 5 - The report is a valuable contribution to our knowledge of the formation of the delta of the Mississippi, and the description and classification of the specimens obtained have a scientific value making it desirable that it should be printed without delay. I would therefore recommend that it be printed at the Government Printing Office, and that 1,500 copies be obtained on the usual department requisition.
Page 24 - If so, has it sunk from the decay and disappearance of its vegetable matter? A process of this kind would have gone on unequally in different parts of the stratum, being affected by the porosity of the superincumbent layers, and would have left it at higher levels under the clays of Nos. 12 and 11 than under the sand-bed No. 9, as we see is the case. But theorizing belongs rather to your department of our task. Trusting that the facts that 1 have accumulated may prove of service, I have the honor...

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