MEDEARIS AXD MARBLE: THYMUS GLAXD. 



145 



TABLE No. 7— CoN-cLrDED. 



Rl. 

 R6 



1,098 

 1.035 



27 



28 5 



33 3 

 31 6 



226 

 .287 



Total result, 10+. 8—. 



XoTE Xo. 1. — It will have been noticed that in the foregoing report nothing" 

 has been said concerning the percentage of thynii bj" length. An examination 

 of the tables will show that there is indeed an increase in this percentage as 

 larger and larger pigs are examined, but that this increase is neither marked 

 nor uniform, and we must consider that part of the increase in weight must 

 come by this increase in length. We feel that the method by which we secured 

 the thymus lengths was not accurate and uniform enough to allow much value 

 to be attached to the figures recorded. They may be taken as rather approxi- 

 mate. In general, the length of the thymus will average about 25 per cent of 

 the total length of the pig. Suffice it to say, however, that we believe that as 

 the foeti grow older and older there is an increase in the percentage of thymu& 

 by length; just how regular and consistent this increase is, we cannot say. 



XoTE Xo. 2. — It is interesting to note that the pigs used for chssection. 

 showed a preponderance of males. This was probably purely accidental, how- 

 ever, and if larger numbers of animals had been used a more balanced ratia 

 would have been secured. 



10 — Science Bill. — 3728 



