18 FORESTRY [Bot. Absts., Vol. V, 



inclusions (dead) containing yolk, fat or oil, glycogen or starch, and pigment when not united 

 with mitochondria; (3) ground protoplasm or cytoplasm (living). This classification is par- 

 ticularly true of embryonic or indifferent cells and other cells containing many secondary 

 formations derived from various sources in the differentiation of the cell. He also gives the 

 nomenclature of cell division, saying that every cell undergoes the process of karyokinesis 

 which involves the division of the chromatin; dictyokinesis which involves the division of 

 the Golgi apparatus; chondrokinesis, the division of the mitochondria. All three processes 

 are preceded by the division of the centrosome, which is possibly stimulated to divide by the 

 nucleus and is therefore called "centrokinesis." He describes at length the various inclusions 

 of the cells emphasizing their morphological distinctions, their chemical constitution, and 

 also tabulates the chemical and staining tests for these cytoplasmic and deutoplasmic inclu- 

 sions. Formal metallic methods for detecting cell inclusions have a future before them. 

 The chromeosmium tetroxide fixatives at present give the best results, but great improvement 

 in the manufacture of microscopic lenses is necessary. — Julia Moesel Haber. 



122. Levine, Michael. Life history and sexuality of Basidiornycetes. [Rev. of: Ben- 

 satjde, Mathilde. Recherches sur le cycle evolutif et la sexualite chez les Basidiornycetes. 

 156 p., 13 pi., 30 fig. Nemours, 1918. (See Bot. Absts. 3, Entry 347.)] Bot. Gaz. 68: 67-68. 

 1919. 



123. Mirande, Marcel. Sur la formation cytologique de i'amidon et de l'huile dans 

 l'oogone des Chara. [Formation of starch and oil in the egg of Chara.] Compt. rend. Acad. 

 Sci. Paris 168: 528-529. 1919. — The cytoplasm of the young egg of Chara is crowded with 

 mitochondria. Numerous clear vesicles appear, which enlarge greatly, forcing the mito- 

 chondria into dark staining lines around the clear areas. Starch grains appear in the vesicles 

 and the result in the mature egg is a ''mitochondrial pseudo-parenchyma" in which the starch 

 grains are embedded. The mitochondria are the primordia of amyloplasts. — Oil appears 

 in the young egg as minute droplets, which increase in size as the egg matures. In the older 

 stages the drops occur in the meshes of the "mitochondrial pseudo-parenchyma." They are 

 not the products of special mitochondria, and may be secreted by the amylogenes themselves. 

 — F. B. Wann. 



124. Molisch, Hans. Das Plasmamosaik in den Raphidenzellen der Orchideen Hae- 

 maria und Anoectochilus. [Plasma mosaic in raphid cells of the orchids Haemaria and Anoecto- 

 chilus.] Sitzungsber. K. Akad. Wiss. Wien (Math.-Nat. Kl.) 126: 231-242. PI. 1. 1917. 



125. Putterill, Victor Armsby. Notes on the morphology and life history of Uromyces 

 Aloes Cke. South African Jour. Sci. 15:656-662. PL 22-23, fig. 1-6. 1919— See Bot, Absts. 

 4, Entry 1153. 



126. Small, James. The origin and development of the Compositae. Miscellaneous 

 topics. New Phytol. 18: 129-176. Fig. 64-78. 1919.— See Bot. Absts. 5, Entry 720. 



127. Stalfelt, M. G. Uber die Schwankungen in der Zellteilungsfrequens bei den Wur- 

 zeln von Pisum sativum. [Variations in the frequency of cell division in the roots of Pisum 

 sativum.] Svensk. Bot. Tidskr. [Stockholml 13 ■ 61-70. 1919— See Bot. Absts. 5, Entry 945. 



FOREST BOTANY AND FORESTRY 



Raphael Zon, Editor 

 J. V. Hofmann, Assistant Editor 



128. Agan, Joseph E. Brazilian fibers. Bull. Pan-American Union 50: 394-404. 4 pi- 

 1920. — Seven fibers of importance are discussed briefly. These are "Piassava," from the 

 bark of the palms Attalca funifera Mart, and Leopoldina piassaba Wall. This fiber is now 

 used in the United States for the manufacture of snow sweepers for street cars. "Piteira 



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