156 



PROFESSOR MARSHALL AND EDWARD J. BLES. 



DESCRIPTION OF PLATE X. 



Illustrating Professor Marshall and Mr. Bles' Paper " On the Develop- 

 ment of the Kidneys and Fat-bodies in the Frog." 



Alphabetical List of Reference Letters for all the Figures. 



A 



Dorsal aorta 



M 



Spinal cord 



AP 



Pulmonary artery 



MG 



Spinal ganglion 



BG 



Portion of body cavity sur- 



MN 



Spinal nerve 





rounding the glomerulus 



M N 2 Brachial nerve 



C 



Red blood-corpuscle 



MO 



Dorsal root of spinal nerve 



D 



Mouth 



MP 



Ventral root of spinal nerve 



DE 



(Esophagus 



MS 



Sympathetic nerve cord 



Dl 



• Intestine 



N 



Notochord 



DL 



Lower lip 



NA 



Head kidney 



DO 



Cloacal aperture 



NB 



Tubule of head kidney 



E 



Nephrostomial tubule 



NO 



Enlarged degenerating tubule 



EA 



Peritoneal opening of nephros- 





of head kidney 





tomial tubule 



ND 



Archinephric duct 



EB 



Opening of nephrostomial 



NG 



Glomerulus of head kidney 





tubule into blood-vessel 



NT 



Nephrostome of head kidney 



EF 



Plagellum 



O 



Opercular cavity 



GF 



Fat-body 



OG 



Internal gill 



GR 



Genital ridge 



P 



Peritoneum 



H 



Ventricle of heart 



PM 



Mesentery 



K 



Wolffian body 



PT 



Mesorchium 



KB 



Bowman's capsule 



R 



Recessus labyrinthi 



KG 



Glomerulus 



S 



Septum formed by fusion of 



KM 



Malpighian body 





lung with head kidney, par- 



KN 



Neck of Malpighian body 





tially boxing in the glo- 



KR 



Tubule of Wolffian body, con- 





merulus 





voluted portion 



T 



Myotome 



KT 



Collecting tubule 



VC 



Posterior vena cava 



KU 



Ureter 



VP 



Pulmonary vein 



KV 



Opening of ureter into cloaca 



VR 



Eenal vein 



L 



Lung 



VS 



Renal portal vein 



LF 



Fore limb 



VN 



Posterior cardinal sinus 



LH 



Hind limb 



Y 



Lymph space 



