12 Th. Lewis, 



is approximately fifty to sixty. Hsemal lympliatic glands or inter- 

 mediate forms are exceedingly numerous, occurring in the axilla, 

 groin, sub vertebral region, roots of the lungs, and mesentery. 



In the pig {Sus domesticus) , haemal glands are to be found in 

 many cases in the sub vertebral region, and in the fat around the 



stomach. 



3. Carnivora. 



In the dog, (Canis familiaris), the general distribution is very ty- 

 pical of that which obtains in several other animals to be presently 

 described. The glands are of the hsemal lymphatic variety, nor have 

 any haemal glands yet been found in this mammal. On raising the 

 kidney a large gland is often disclosed in close contact with the 

 thoracic duct, embedded in perinephritic fat. It is usually the most 

 typical found in the body. In addition there often exists a large 

 "splenic group'' of glands, situated on the splenic vessels, and easily 

 exposed by drawing the stomach over to the right side. Other glands 

 frequently occur in the subvertebral region, extending into the pelvis, 

 lying also beneath the aorta and iliac vessels. A few more, closely 

 resembling ordinary lymphatic glands, are seen in the neck. These 

 bodies are all of a yellowish colour, irregularly blotched in places 

 with red. They are very irregular in shape, and are often closely 

 adherent to surrounding fat: they vary in length from ^/2—2 cms. 

 Dissections have been made of the vascular and nervous supply, w^hich 

 closely resemble the same systems in the rat, under the heading of 

 which it is intended to describe them. The lymphatic supply of these 

 haemal lymphatic glands is very striking; the vessels appear as transparent 

 thin walled tubes often measuring as much as '^/^ — 1 mm in diameter, 

 and consequently may be found without difficulty. As their arrangement 

 has been more thoroughly worked out in the cat, in which they are 

 practically identical with those under consideration, they will be des- 

 cribed in that connection. I wish to lay stress upon the general 

 arrangement in the dog, as it is not only typical of the carnivora, 

 but also of many rodents. 



In the cat, (Fells domestica), the arrangement is almost identical 

 with that already detailed in the dog. The glands, which are all 



