OHAPTEK IV. 



Origin of the "Yield Mark"* Disco veeed. 



Milk Weight Causes the "Escutcheon" Mark. 



The word "Escutcheon," the Heraldic term emplo)ed 

 by Guenon, and since by many other writers, indicates 

 the subject of the present chapter, but not in any degree 

 the metliod we adopt to clear the confusion of language 

 and inference in which the subject has long been involved. 

 The origin of the ' 'Yield Mark' ' was an absolute ' 'mystery' ' 

 to Guenon, so much so that he has not once alluded to, or 

 given the remotest hint upon the subject, in his work on 

 the "Escutcheon." or, as it will be styled in this work, 

 the "Yield Mark" — for the mark is certainly an effect of 

 milk yield. Nor is there the least suggestion in any of 

 Guenon's statements or conclusions, — and this we fear is 

 true of Mayne, and other writers on this popular theme, — 

 affording the least indication of the real cause and origin 

 of the reversal, or upward growth of the hair, within the 

 limits of the "Yield Mark," almost universally found upon 

 the twist and contiguous thigh parts of cows of moderate 

 or larger milk yield. 



In the entire absence of light from any quarter on the 

 causes or forces of which the "Yield Mark" is the neces- 

 sary result, it devolves on the writer to make this explanation 

 of the origin of this conspicuous ''Yield Mark," in his own 

 way, in accordance with his discovery of its origin, in i86i, 

 and with the natural forces which produce it. 



* This name being short and indicative, is constantly employed in this work, 

 instead of tUe word "Escutclieon," 



