Carnegie Institution of Washington Publication, Issue 223

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Carnegie Institution of Washington, 1915 - Science
 

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Page 63 - ... form to another. A single mitochondrium may bend back and forth with a somewhat undulatory movement, or thicken at one end and thin out at the other with an appearance almost like that of pulsation, repeating this process many times. Again, a single mitochondrium sometimes twists and turns rapidly as though attached at one end, like the lashing of a flagellum, then suddenly moves off to another position in the cytoplasm as though some tension had been released.
Page 42 - The mesoderm of ascidians conies from a crescent of mesoplasm which surrounds the posterior side of the egg just dorsal to the equator. The...
Page 83 - When the poison is discharged, the remains of the glands are resorbed, and at the same time one of the five or six undeveloped glands grouped around the mouth of the functioning gland grows down alongside the remains of the discharged gland, pushing it aside to occupy its former place.
Page 69 - XXXL 1908. Die Chondriosomen als Träger erblicher Anlagen. Cytologische Studien am Hühnerembryo. Arch.
Page 69 - Samenreifung und Samenbildung bei Locusta viridissima. Zool. Jahrbücher, Bd. 24. Retzius, 1881: Biol. Unters. — 1904: Biol. untersuch., neue Folge, Bd. 11. Romeis, 1913: Beobachtungen über die Plastosomen von Ascaris megalocephala während der Embryonalentwicklung unter besonderer Berücksichtigung ihres Verhaltens in den Stamm- und Urgeschlechtszellun.
Page 69 - Untersuchungen über den Bau und die Entwicklung der Eier von Ascaris megalocephala in der Periode vor und nach dem Befruchtungsakt und mit besonderer Berücksichtigung des Verhaltens der Chromosomen- zur Ehrlich-Biondi-Färbung.
Page 30 - On the Origin of the Duct of Cuvier and the Cardinal Veins." (Proc. Assn. Am. Anat., Thirty-first Session, Dec., 1914.) Anat. Rec., 9:115. (Abstract.) 1915-1916 "The Method of Growth of the Lymphatic System.
Page 63 - The mitochondria are almost never at rest, but are continually changing their position and also their shape. The changes in shape are truly remarkable, not only in the great variety of forms, but also in the rapidity with which they change from one form to another. A single mitochondrium may bend back and forth with a somewhat, undulatory movement or thicken at one end and thin out at the other with an appearance almost like that of pulsation, repeating this process many times. Again, a single mitochondrium...
Page 64 - Corresponding to the forms observed in the stained preparations, we find in the living cells that granules can be seen to fuse together into rods or chains, and these to elongate into threads, which in turn anastomose with each other and which may unite into a complicated network, and in turn may again break down into threads, rods, loops, and rings.
Page 51 - III, 1883). bles entre eux, l'un renferme la substance aux dépens de laquelle se forme la moitié droite (Bl. D), l'autre les matériaux destinés à l'édification de la moitié gauche (Bl. G) du corps de la larve.

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