184 Description of the Plates. 



apposed to and so appearing to surround it. See Langer, 

 Lymphgefasssystem des Frosches, 1 866-1 867, Wien. Akad. 

 Wiss. Sitz. Bericht. 



m. Fatty bodies. 



n. Spleen. To the left and a little above the spleen are seen the 

 cut ends of two vessels, one of which receives a factor from 

 that organ, coming itself from the intestine, and the other 

 of which took its origin in the stomach, and, like the 

 former, joined a branch of the epigastric, and was distri- 

 buted to the liver, a small portion of which is seen as left 

 immediately above them. 



0. Gall bladder left attached to the epigastric vein by a vein 

 which passes from it to that vessel. 



jo. Lung of left side. The cavity seen on the outer side of either 

 lung has its outer wall constituted by the internal abdominal 

 muscle, homologous with the internal oblique and transver- 

 salis which arches inwards in a dome shape, and is connected 

 with oesophagus, pericardium, and the coracoid and hypo- 

 sternal bones. In the natural condition of the parts these 

 cavities are however mainly occupied by the lobes of the 

 liver, which nearly entirely cover the lungs in an anterior 

 view. 



q. Heart. From the base of the ventricle the muscular bulb is 

 seen to take origin, a constriction known as i\iQf return Hal- 

 leri marking the line of separation of the two organs. The 

 bulb bifurcates into two great divisions, which again are each 

 firstly subdivided by two imperfect internal partitions into 

 three canals, and then subsequently into three perfect tubes, 

 the carotico-lingual, the aortic, and the pulmonary trunks, of 

 which the first is most internal and anterior, and the last the 

 most external and posterior. 

 q . Musculus bulbus arteriosus, with the auricles one on each 

 side. It inclines to the left, and is attached on that side to 

 the ventricle by W\& frenulum hulhi of Briicke. Denkschrift. 

 Akad. Wien. Bd. iii., p. '>^^e^, 185a. 

 r. Lingual branch of the first of three trunks arising just inter- 

 nally to a caverno -muscular dilatation of the artery known 

 as the ' carotid gland,' from the outer side of which the 

 carotid artery, called sometimes the ' ascending pharyngeal,' 



