Conklin: Value of Negative Eugenics 541 



No. of cases Percentage 



Causes acting before birth 2,651 65 . 45 



Family History of Idiocy and Imbecility 1,030 or 25.43% 



Causes acting at birth 186 - 4. 59 



Causes acting after birth 1,213 29.96 



Totals 4,050 100. 



Dr. George Mogridge, Superintendent with apparently good heredity and 



of the Iowa Institution for Feeble- good environment the children of many 



Alinded Children has kindly supplied excellent people are more or less defec- 



me with the following figures regard- tive, and at present we know of no 



ing the reported mental condition means to reduce the number of stich 



of the parents of persons who have mistakes of nature. The eugenicist can 



been admitted to that institution, at sometimes "explain" such mistakes 



the same time warning me that after they have occurred, though unable 



such statistics are not altogether reli- to predict them before the event, 



able: Indeed eugenical explanations are apt 



Number of families investigated 1,701 or 100. 0% 



Inmates who have both parents feeble-minded 66 or 3 .00-/0 



One parent feeble-minded and other normal or unknown 134 or 7 . 88% 



Number with both parents normal 513 or 30. 16% 



Number with both parents unknown 876 or 51.5% 



Insanity in one or both parents 112 or 6. 58% 



Defects, whether due to heredity or to to be more convincing and accurate 



environment, are multitudinous. Even than eugenical prophecy; it is well to 



feeble-mindedness is no simple thing ; have eugenical insurance against having 



some persons are born fools, some defective children, but it is advisable 



acquire foolishness, and some have not to have all your insurance in one 



foolishness thrust upon them. Even company. 



NEW PUBLICATIONS 



THE AMERICAN PET STOCK STANDARD OF PERFECTION and Official Guide of 

 the American Fur Fanciers' Association. Compiled by J. Henri Wagner, president. American 

 Fur Fanciers' Association, Washington, D. C, 1915; pp. 52, price 50 cents. 



Breeders of rabbits, cavies (guinea-pigs), rats and mice are here provided with 

 specifications, such as breedsrs of other animals and fowls have long enjoyed. In 

 the case of many breeds, a brief account of the origin is given. Diagrams of 

 color pattern and photographs of excellent specimens of each breed increase the 

 value of the book as a work of reference for all who are interested in the smaller 

 kinds of pet stock. 



Inheritance of a Profile 



At the Casalina estate, near Perugia, Italy, crosses are made between Rambouillet 

 rams and Middle Tiber Valley ewes. The latter have a very convex profile of 

 nose and forehead, as compared with the straight face of the Rambouillet; the 

 results obtained lead to the conclusion that in the first hybrid generation all the 

 crosses have a straight face profile, while the convex profile reappears in the second 

 hybrid generation, in a ratio very nearly following the expectation for a recessive 

 under Mendel's law — namely, one in four. — Carlo Pucci, director of the zootech- 

 nical laboratory of the Royal Agricultural Institute of Perugia, in // Moderno 

 Zooiatro, Bologna, April 30, 1915. 



