Prof. M^Intosli's Notes on the Tnnny, 838 



On the whole, the second duct is that which appears to 

 have the largest collection of ca3ca,the first and fourth following- 

 next in order, and thereafter the fifth, sixth, third, and seventh 

 respectively. In the interior of the ducts is a reddish gela- 

 tinous substance, which presents a granular structure with 

 numerous oil-globules and opaque fatty concretions of a 

 rounded shape. 



The great mass of the pyloric cteca presents a cordate 

 outline, the intestine entering the centre. It is 13 inches 

 across the base, and from the latter to the apex measures 

 20 inches. It is invested by peritoneum, the edges of which 

 show crenations, and in certain parts fimbrise. 



The intestine measures 5 feet from the end of the duo- 

 denum to the rectum. The entire surface is covered with 

 a downy coat of villi about I inch in length. No food was 

 present amongst the masses of t(7ugh mucus. The peritoneal 

 surface of the intestine and gall-bladder presents numerous 

 black pigment-streaks and patches. The villi of the rectum 

 were covered with bloody mucus. The diameter of the canal 

 is nearly uniform. 



One of the most interesting features in connexion with the 

 liver and its vascular supply is the presence of the remarkable 

 " Wundernetze " so ably described by Eschrichtand Miiller*. 

 Four conspicuous examples of these occur in the hollow of 

 the liver, along the wall of the stomach, just behind the oeso- 

 phagus, besides some minor spindle-shaped processes, and at 

 first sight their consistence and colour might readily cause 

 them to be mistaken for splenic tissue. The first measures 

 3^ by 2^ inches, the second 4f by 2^ inches, the third 6^ by 

 3 inches at the widest part, and the fourth "Ih by 1^ inches. 

 All are of a deep reddish colour, somewhat reniform in out- 

 line and present similar structure. Large blood-vessels, 

 chiefly connected with the hepatic artery, enter them and 

 split up into a closely arranged series of parallel vessels, 

 so that the organs assume a fibrous appearance, and readily 

 tear in the direction of the parallel vessels from edge to edge. 

 In this instance the splitting was transverse or slightly oblique 

 with regard to the long axis. In the smallest, on the other 

 hand, the fibres ran in the direction of the latter. On exa- 

 mining a thin transverse section {i. e. across the long axis of 

 the fibres and tubes) under a lens a closely arranged series 

 of reticulations present themselves, a larger and a smaller 

 being especially conspicuous (PL XI. fig. 1), this variation 



• " Ueber die artericisen und venosen Wundernetze an der Leber und 

 eiuen merkwiirdigen Bau dieses Organes beim Thunfische," Abhandl. 

 der k. Akad. d. Wissenschat'ten zu Berlin, 1835, p. 1 &c. 



Ann. ds Mag. N. Hist. Ser. o. Vol. xvii. 23 



