486 



YAM. 



INDEX. 



ZOPF-TAVBE. 



Yam, development of axillary bulbs in 

 the, ii. 169. 



Yarrell, Mr., deficiency of teeth in 

 hairless dogs, i. 34, ii. 326 ; on ducks, 

 i. 279, ii. 262 ; characters of domestic 

 goose, resembling those of Anser albi- 

 frons, i. 288 ; whiteness of ganders, i. 

 288 ; variations in goldfish, i. 296-297 ; 

 assumption of male plumage by the 

 hen-pheasant, ii. 51 ; effect of castra- 

 tion upon the cock, ii. 51-52 ; breeding 

 of the skylark in captivity, ii. 154; 

 plumage of the male linnet in con- 

 finement, ii. 158; on the dingo, ii. 

 263. 



Yellow fever, in Mexico, ii. 276. 



Yew, fastigate, ii. 241. 



Yew, Irish, hardy in New York, ii. 309. 



Yew, weeping, i. 361 ; propagation of, 

 by seed, ii. 18-19. 



Yolk, variations of, in the eggs of ducks, 

 i. 281. 



Youatt, Mr., history of the dog, i. 16-17 ; 

 variations of the pulse in breeds of 

 dogs, i. 35 ; liability to disease in 

 dogs, i. 35, ii. 227 ; inheritance of 

 goitre in dogs, ii. 10 ; on the grey- 

 hound, i. 34, 41 ; on King Charles' 

 spaniels, i. 41 ; on the setter, i. 41 ; on 

 breeds of horses, i. 49 ; variation in the 

 number of ribs in the horse, i. 50 ; in- 

 heritance of diseases in the horse, ii. 

 10, 11 ; introduction of Eastern blood 

 into English horses, ii. 212-213; on 

 white Welsh cattle, i. 85, ii. 209 ; im- 

 provement of British breeds of cattle, 

 i. 93; rudiments of horns in young 

 hornless cattle, ii. 55, 315; on crossed 

 cattle, ii. 104, 119 ; on Bake well's long- 

 horned cattle, ii. 118; selection of 

 qualities in cattle, ii. 196 ; degenera- 

 tion of cattle by neglect, ii. 239; on 

 the skull in hornless cattle, ii. 333; 

 disease of white parts of cattle, ii. 337 ; 



displacement of long-horned by short- 

 horned cattle, ii. 426; on Angola 

 sheep, i. 95 ; on the fleece of sheep, i. 

 99 ; correlation of horns and fleece in 

 sheep, i. 95 ; adaptation of breeds of 

 sheep to climate and pasture, i. 96 ; 

 horns of Wallachian sheep, i. 96 ; ex- 

 otic sheep in the Zoological Gardens, i. 

 96-97, ii. 305 ; occurrence of horns in 

 hornless breeds of sheep, ii. 30 ; on the 

 colour of sheep, ii. 30 ; on interbreed- 

 ing sheep, ii. 120 ; on Merino rams in 

 Germany, ii. 196 ; effect of unconscious 

 selection on sheep, ii. 213 ; reversion 

 of Leicester sheep on the Lammermuir 

 Hills, ii. 224; on many-horned sheep, 

 ii. 326; reduction of bone in sheep, 

 ii. 242 ; persistency of character in 

 breeds of animals in mountainous 

 countries, ii. 64; on interbreeding, ii. 

 116 ; on the power of selection, ii. 194- 

 195 ; slowness of production of breeds, 

 ii. 244 ; passages in the Bible relating 

 to the breeding of animals, ii. 201-202. 



Young, J., on the Belgian rabbit, i. 106. 



Yule, Capt., on a Burmese hairy family, 

 ii. 77, 327. 



Zambesi, striped young pigs on the, i. 77. 

 Zambos, character of the, ii. 47. 



Zano, J. G., introduction of rabbits into 



Porto Santo by, i. 112. 

 Zea Mays, i. 320. 

 Zebu, i. 79 ; domestication of the, i. 82 ; 



fertile crossing of, with European cattle, 



i. 83, ii. 110. 

 Zebba, hybrids of, with the ass and mare, 



ii. 42. 



Zepliyrantlies Candida, ii. 164. 

 Zinnia, cultivation of, ii. 261. 

 Zollinger on Malayan penguin ducks, i. 



280. 

 Zoospore, division of, in Algse, ii. 378. 

 " Zopf-Taube," i. 154. 





THE END. 



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