506 THE AMERICAN NATURALIST [Vol. XL VI 



1912. No bad effects resulted from the abortion and the 

 pig soon regained her normal condition and was returned 

 to the piggery on April 9, 1912. Shortly after this she 

 again became pregnant and during the greater part of 

 her pregnancy she was kept in a small cage with another 

 female pig as one of a set of pigs employed in the study 

 of the calcium metabolism of the guinea pig. 3 At the con- 

 clusion of these observations she was again returned to 

 the piggery on June 13, 1912, and on June 24, 1912, she 

 was again brought back to the laboratory. During the 

 day she gave normal birth to three pigs, weighing respect- 

 ively 40, 40.5 and 43.5 grams. One of these young pigs 

 was dead when examined a few hours after birth, the 

 other two were alive. Of the latter, one was paralyzed 

 in its hind quarters and died, probably of inanition, a 

 few days after birth. The remaining pig, a female, was 

 normal in every respect and is alive and well to-day 

 (August 5, 1912), and now weighs 157 grams. It was 

 observed by Dr. Buckner that the color markings on the 

 young pig are like those on the mother, except that these 

 markings are on exactly opposite positions on the body. 

 In other words, these two pigs, mother and daughter, 

 show an asymmetric color resemblance. That such is the 

 case is evident from the photographs, Figs, 1, 2, 3 and 4, 

 although these fail to show this as well as the originals 

 for the reason that the actual colors are wanting. Fur- 

 thermore, this remarkable resemblance is a little obscured 

 and marred by the fact that the young pig has consider- 

 ably longer hair than the mother, probably as the result 

 of an Angora strain. Unfortunately, too, nothing is 

 known regarding the parentage of this pig on the male 

 side. The following is an exact description of the two 

 pigs, which in order to render comparisons more easy, 

 is printed in double columns and given for opposite por- 

 tions of the body, in order to bring out the asymmetric 

 character of the resemblance. 



Eelation to Anaphylax: 



