568 SCIENCE PROGRESS 



no. 2, Feb. 1920) ; Huntington, " A Critique of the Theories of Pulmonary- 

 Evolution in the Mammalia" {Amer. Jour. Anat., vol. xxvii, no. 2, May 

 1920) ; Ibsen, " Linkage in Rats " {Amer. Nat., vol. liv, Jan. 1920) ; Jackson 

 and Stewart, " The Effects of Inanition in the Young upon the Ultimate 

 Size of the Body and of the various Organs in the Albino Rat " {Jour. Exp. 

 Zool., vol. XXX, Jan. 1920) ; Kittelson, " Effects of Inanition and Refeeding 

 upon the Growth of the Kidney in the Albino Rat " {A.nat. Rec, vol. xvii, 

 no, 5, Jan. 1920) ; Larsell, " Pancreatic Bladders " (ibid. vol. xviii, no. 4, 

 May 1920) ; Lewis, " The Course of the Wolfi&an Tubules in Mammalian 

 Embryos " {Amer. Jour. Anat., vol. xxvi, no. 3, Jan. 1920) ; Mann, " A 

 Comparative Study of the Anatomy of the Sphincter at the Duodenal End 

 of the Common Bile-duct, with Special Reference to Species of Animals 

 without a Gall-bladder" {Anat. Rec, vol. xviii, no. 4, May 1920) ; Mann, 

 Brimhall, and Foster, " The Extrahepatic Biliary Tract in Common Domestic 

 and Laboratory Animals " {ibid., no. i, Feb. 1920) ; Meyer, " The Case and 

 Problem Method in Anatomic Neurology " {ibid., no. 4, May 1920) ; Miller 

 and Gidley, " A New Fossil Rodent from the Oligocene of South Dacota " 

 {Jour. Mamm., vol. i, no. 2, Feb. 1920) ; Senior, " The Development of the 

 Human Femoral Artery, a Correction" {Atiat. Rec, vol. xvii, no. 5, Jan. 

 1920) ; Sheppard, " Hermaphroditism in Man " {ibid, vol. xix, no. i, June 

 1920) ; Smith, " A Study of the Lipoid Content of the Kidney Tubule " 

 {Amer. Jour. Anat., vol. xxvii, no. i, March 1920) ;Stewart, " The Development 

 of the Cranial Sympathetic Ganglia in the Rat " {Jour. Comp. Neur., vol. xxxi, 

 no. 3, Feb. 1920); Sowerby, "A New Three-toed Jerboa from China" 

 {Ann. and Mag. Nat. Hist., vol. v. Mar. 1920) ; Strong, " An Inexpensive 

 Model on the Principal Spinal-cord and Brain-stem Tracts" {Anat. Rec.,^ 

 vol. xix, no. I, June 1920); Sutton, "The Fascia of the Human Orbit" 

 {ibid., vol. xviii, no. 2, March 1920) ; Thomas, " Two New Species of Sylvilagus 

 from Columbia " ; "A New Shrew and two New Foxes from Asia Minor 

 and Palestine " ; The Generic Positions of ' Mus ' nigricauda, Thos., woosnami, 

 Schwann " ; "A New Taphozous from the Soudan " ; "A New Marmoset 

 from the Peruvian Amazons" (all from Ann. and Mag. Nat. Hist., vol. v, 

 Jan. 1920) ; " Some Notes on Babirussa," " A Further Collection of Mammals 

 from Jujuy " (both ibid., Feb. 1920) ; " Two New Asiatic Bats of the Genera 

 Tadarida and Dyacopterus," "Four New Squirrels of the Genus Tamiops" 

 (both ibid., March 1920) ; Vincent and Arnason, "The Relationship between 

 the Thyroid and Parathyroids " {Endicrino, vol. iv, no. 2, June 1920) ; 

 Wilhelmi, " A Case of Double Ureter in Man with Failure of Development of 

 the Kidney about the Aberrant Ureter " {Anat. Rec, vol. xviii, no. 2, March 

 1920) ; Wodsedalek, " Studies on the Cells of Cattle, with Special Reference 

 to Spermatogenesis, Oogonia, and Sex-determination" {Biol. Bull., vol. xxxviii, 

 no. 5, May 1920) ; and Wroughton and Cheesman, " A New Species of 

 Mellivora from Somaliland " {Ann. and Mag. Nat. Hist., vol. v, Feb. 1920). 



One of the most striking lines of cytological research in 

 recent years has been in the direction of studying the special 

 extra-nuclear bodies included within the cytoplasm, and over- 

 looked for a considerable time owing to inadequate fixation. 

 They have formed the basis of series of papers by Gatenby, 

 who has added a general survey in " The Cytological Inclusions 

 of the Germ-cells. Part VII, The Modern Technique of 

 Cytology " {Quart. Jour. Micro. Set., vol. Ixiv, pt. 3, March 1920). 

 The paper provides a classification of the cell inclusions, and 

 discusses their nature and the problems they present. This is 

 followed by an account of the various modern methods of 



