SUBJECT INDEX 759 



Calcium metabolism, disturbance of, in dachshund-Brussels griffon hybrids, 

 339-342 

 and parathyroids, 475, 478-480, 514 



Cartilage defects, in girdles of bulldog, 92 

 underlying achondroplasia, 16, 45 



Castration, effect on, body form, 19 

 behavior, 736-740 



Cattle, 3, 4, 5, 19, 20 



Cell, distribution in pituitary, 450-453 



parafollicular, general considerations of, 426-427 



Chihuahua, 9, 14 



•'how, 9, 10, 39, 208 



Chromosomes, number of, in dog, 140 



Coat, shedding of, 10 



variations in, among dogs, 10 



Cocker spaniel, 208, 438 



Color inheritance in dogs, studies on, 7 



Conditioned avoiding situation, (see conditioned reflexes, motor) 



Conditioned reflexes, (see also behavior) 



as affected by partial thyroidectomy and thyroid regeneration, 680-687, 684, 



686 

 changes in, during lactation, 661, 062-663, 662 



during oestrus, 659-662, 660, 661 

 method of, 649-658, 651, 653 



motor, as affected by, adrenalectomy, 730-735, 735 

 and suprarenal cortical extract, 732-735, 735 

 adrenalin, 723-730 

 hypophysectomy, 710-716, 714 



and anterior lobe extract, 711-716, 715 

 thyroid extract, 662-672, 668, 670, 671 

 thyroidectomy, partial, 680-684, 682, 684 

 thyro-parathyroidectomy, 699-709, 705, 707 

 behavior between signals in, 585, 586 

 behavior in, summary of, 590—594 

 behavioral classification in, 578-590 

 delay of, among types, 584 



nature of, 593 

 generalization of, among types, 587, 588 

 kennel behavior compared with, 576 

 reaction to negative signals in, 587, 590 

 type of, used in experiments, 533, 575 



