462 STANHOPE BAYNE-JONES 



3. The chordae tendineae receive a lew small arterioles from 

 the vessels of the papillary muscles. These tra^'erse the chordae 

 tendineae chiefly beneath the endothelium covering these 

 structures. 



4. The semilunar valves receive a definite blood supply from 

 the vasa \'asorum of the pulmonary artery and aorta and from 

 the endocardial vessels of the auricles. 



5. These vessels afford a definite anatomical basis for the 

 conception that endocarditis may be embolic in its origin. 



REFERENCES 



(1) KosTER, K. 1878 Virchow's Archiv, 72, 257-277. 



(2) LuscHKA, H. 1852 Virchow's Archiv, 4, 171-192. 



(3) LuscHKA, H. 1863 Die Anatomie des Menschen, Bd. 2, Abt. II, p. 385. 



(4) Joseph, L. 1858 Virchow's Archiv, 14, 244. 



(5) CoEN, S. 1886 Archiv f. Mikroskop. Anat., 27, 397-403. 



(6) Langer, L. 1887 Virchow's Archiv, 109, 465-476. 



(7) Tandler, .J. 1913 Anatomie des Herzens, Bardeleben's ''Handbuch der 



Anatomie des Menschen," Bd. 3, Abt. I, p. 95. 



(8) KoNiGER, H. 1903, 1908 Histologische Untersuchengen liber Endokar- 



ditis, arbeiten aus dem Pathologische Institute zu Leipsig. 



(9) NusEBAUM, A. 1912 Archiv fiir Mikroskop. Anat., 80, 450-477. 



(10) RosENow, E. C. 1912 Jour. Infect. Dis., 11, 210-224. 



(11) MacCallum, W. G. 1916 A Text-book of Pathology, pp. 233-242. 



PLATE 1 



Semidiagrammatic drawing made by Mr. Max Brodel based upon several 

 specimens, giving a composite picture of the typical vascular anatomy of a 

 completely injected human mitral or tricuspid valve. Enlarged X 6.5. 



