examination also necessitates an accurate knowledge of the location and 

 normal size of the accessible lymph glands. 



It should be kept clearly in mind that identical relations of parts in any 

 two specimens are not to be expected. Variations in the relations of many 

 of the organs may be due either to differences in relative or absolute size 

 of these organs or to their varying extent of repletion at the time the speci- 

 men was prepared and hardened. For example, in one of the specimens used 

 the caudal extremity of the caecum was in the pelvic cavity, PL VI, 31, 

 but in the other four specimens it did not project into this cavity. In two 

 of the specimens, also, the pelvic cavity was occupied by a considerable 

 mass of the small intestine, whereas in the other cows a much smaller por- 

 tion of the pelvic cavity was thus occupied. The few measurements that 

 are given are of individual cases and not averages unless so stated. It should 

 be kept in mind that the respective lymph glands vary considerably in size 

 in normal healthy animals. Identical conditions as to size and number of 

 these glands are not to be expected. 



My thanks are due Dr. Earl Sunderville for assistance in the dissections 

 and in photographing the same. To the Dean of the College, Dr. V. A. 

 Moore, and to Dr. R. R. Birch thanks are due also for their cooperation in 

 securing the necessary anatomical material. 



