SECTION IV, 1912 [79] Trans. R. 5S. C. 
The Abdominal Chromaphil Body of the Dog. 
By SwaLE Vincent, M.D., D.Sc. 
(Read May 16, 1912). 
(From the Physiological Laboratory, University of Manitoba.) 
(Preliminary Communication). 
Stilling’ in 1890 found in the region of the abdominal sympathetic 
small bodies composed of cells having the same chromaphil reaction 
as those which form the medulla of the adrenal body. He states that 
some are nearly a centimetre in length, while others are only just visible 
to the naked eye. They are round, elongated or oval in form and their 
thickness is never more than a few millimetres. They have a tunica 
propria, small vessels and capillaries. Between the capillaries are cells 
which resemble in all respects those of the adrenal medulla. The 
resemblance between the chromaphil corpuscles of the sympathetic 
and the medulla of the adrenal is rendered all the greater by the occur- 
rence in the latter of occasional nerve cells. Stilling found these cor- 
puscles in the rabbit, the cat, and the dog, and especially in young 
animals. He gives details of a method for displaying them. 
Stilling further discovered that the carotid body contains chro- 
maphil cells? Kohn* and Kose* laid stress on the point that the 
chromaphil cells are common and typical elements of the mammalian 
sympathetic system. 
ZuckerkandF in 1901 found in the retroperitoneal space at the 
origin of the inferior mesenteric artery a pair of large chromaphil bodies 
which he calls “ Nebenkorper des Sympathicus.’’ These he found con- 

' “Revue de Médecine,” November, 1890, p. 808, ff. 
? Recueil inaugural de l’Université de Lausanne, 1892. 
3 “ Prager med. Woch.,”’ 1898, Bd. 23, s. 194-195; ‘Arch. f. mikr, Anat.,’”’ 1898, 
Bd. 53, s. 281-312; ‘‘Anat. Anz.,”” 1899, Bd. 15; ‘Ergebnisse d. Anat. u. Entwick.,”’ 
1899, Bd. 9; ‘Arch. mikr. Anat.,” 1900, Bd. 56; “Prag. med. Woch., 1902, Jg. 27; 
“Arch. f. mikr. Anat.,’’ 1903, Bd. 62; ‘Allg. Wein. med. Zeitschr.,”’ 1903, Jg. 48, nr. 
46 u. 47; “Ergebnisse Anat. u. Entwickl., 1902, Bd. 12; Prag. med. Woch., 1903, 
nr. 42. 
4 “Sitz. Ber. d. naturw.-med. Ver. f. Bohmen, Lotos,’”’ 1898, No. 6; Anat. Anz., 
1902, Bd. 22; ibid 1904 Bd. 25. 
5 Verhandl. d. Anatom. Ges. Bonn, 1901, 15 Vers; Anat. Anz., Argänzungsh. 
3, 1901, Bd. 19, pp. 95-107. 
