250 



PEARL— EFFECT OF CERTAIN POISONS 



The total germ dosage index for the F^ progeny in these experi- 

 ments ranges from 130 days to 354 days with the matings for the 

 different substances used well scattered over the range. 



3. The Fertility and Hatching Quality of the Eggs from Alcohol- 

 iced Parents. — One of the surest and most delicate indicators of con- 

 stitutional vigor and vitality in poultry which has yet been discovered 

 is the hatching quality of the eggs. Anything which upsets the gen- 

 eral metabolic balance or impairs the vitality of either partner in a 

 mating will show its effect in a diminished hatching power of the 

 eggs from that mating. In view of these facts an examination of 

 the data relative to this character in these alcoholic matings becomes 

 of especial interest. A summarized statement of the effects on the 

 progeny is given in Table II. 



TABLE II. 



Showing in Summary Form the Effect of Continued Administration of 



Alcohol (Ethyl and Methyl) and Ether, by the Inhalation 



Method, upon the Progeny. 



Character Studied. 



1. Mean germ dosage index. . 



2. Percentage of infertile eggs 



{i. e., eggs in whicli no 

 zygote was formed) 



3a. Percentage of embryos dy- 

 ing in shell 



36. Percentage of fertile eggs 

 (i. e., zygotes) which 

 hatched 



4. Percentage of all eggs which 



hatched _. 



5. Percentage mortality under 



180 days of age 



6. Percentage mortality over 



180 days of age 



7. Sex ratio: percent, cfcf.. 



8. Mean hatching weight per 



bird, males 



9. Mean hatching weight per 



bird, females 



10. Mean adult weight per bird, 



males 



11. Mean adult weight per bird, 



females 



12. Percentage of weak or de- 



formed chicks 



13. Abnormalities of Mendelian 



inheritance 



Offspring of 



Treated cf cf 



X Un- 

 treated 9 9 . 



Treated cf cf 



X 

 Treated 9 9. 



137-8 



36.6 



63.0 

 47.1 

 21. 1 



5-9 



48.9 



34-91 

 35-04 

 2,669 

 2,020 



0.7 



o 



299.0 



59-2 

 26.9 



72-3 



29.4 



10.6 



13-6 

 45-5 



36.97 



37-17 



2,815 



2,063 



o 



All Treated 

 Parents. 



210.35 



41.7 

 33-3 



66.7 

 38.6 

 17.6 



10.3 



47-7 



Untreated 

 Controls 



0.4 



25-3 



42.2 



2.392 



1,928 



I.O 



Net Result 

 on Alcohol 

 Offspring. 



+ 

 + 



+ 



+ 

 O 



+ 



+ 



+ 



+ 



+ 







