58 SCIENCE PROGRESS 



involved save that part concerned producing parathyroid IV. 

 The internal thymic lobule is almost of constant occurrence 

 in the cat but is to be regarded as a regressive structure. 



Other papers include : A series of papers on the sympa- 

 thetic nervous system as follows : Ranson, " An Introduction 

 to a Series of Studies on the Sympathetic Nervous System " ; 

 Billingsley and Ranson, " On the Number of Nerve Cells in the 

 Ganglion Cervicale Superius and of the Nerve Fibres in the 

 Cephalic End of the Truncus Sympatheticus in the Cat, and 

 on the Numerical Relations of Preganglionic and Postganglionic 

 Neurones," and also " Branches of the Ganglion Cervicale 

 Superius in the Cat " ; three papers by Ranson and Billingsley, 

 " The Thoracic Truncus Sympatheticus, Rami Communicantes, 

 and Splanchnic Nerves in the Cat " ; " An Experimental 

 Analysis of the Sympathetic Trunk and greater Splanchnic 

 Nerve in the Cat " and " The Superior Cervical Ganglion and 

 the Cervical Portion of the Sympathetic Trunk," all of which 

 are in Jour. Comp. Neur. vol. xxix. No. 4, August 191 8 ; Allen, 

 " Surface View of several Injected Intestinal Villi of a Rabbit " 

 (Anat. Rec. vol. xv. No. 1, August 191 8) ; Atwell, " The Deve- 

 lopment of the Hypophysis Cerebri of the Rabbit (Lepus 

 cuniculus) " (Amer. Jour. Anat. vol. xxiv. No. 3, September 

 191 8) ; Casparis, " Lymphatics of the Omentum " (Anat. Rec. 

 vol. xv. No. 2, September 191 8) ; Curtis, " The Morphology 

 of the Mammalian Seminiferous Tubule " (Amer. Jour. Anat. 

 vol. xxiv. No. 3, September 191 8); Danchakoff, " Equivalence 

 of Different Hematopoietic Anlages (by method of stimulation 

 of their stem cells) : II. Grafts of Adult Spleen on the Allantois 

 and Response of the Allantoic Tissues" (ibid. July 191 8) ; 

 Hollister, " East African Mammals in the United States National 

 Museum : Part I. Insectivora, Chiroptera and Carnivora " 

 (U.S. Nat. Mus. Bull. 99, 191 8) ; Jordan, " A Description of a 

 case of False Hermaphroditism " (Anat. Rec. vol. xv. No. 1, 

 August 191 8) ; " The Histology of Lymph, with special refer- 

 ence to Platelets " (ibid.), and " A Contribution to the Problems 

 concerning the Origin, Structure, Genetic Relationship, and 

 Function of the Giant Cells of Hemipoietic and Esteoly tic Foci " 

 (ibid. July 191 8) ; King, "Studies on Inbreeding: I. The 

 Effect of Inbreeding on the Growth and Variability in the Body 

 Weight of the Albino Rat " (Jour. Exp. Zool. vol. xxvi. No. 1, 

 May 191 8) ; Marshall, " An Unusual Right Lung " (Anat. Rec. 



