702 O. D. ANDERSON 



and on the days following, the amount dropped strikingly 

 (to 45). 



As would be expected, the dog's general behavior outside 

 the laboratory was very noticeably altered after the operation 

 and before the treatments. The legs were somewhat rigid 

 and the walking gait was slow and uncoordinated, the body 

 swaying from side to side as though the dog were intoxicated 

 with alcohol. An occasional twitching of the temporal muscles 

 was seen. Mourning sounds were frequently heard. 



Dog 856 $ , bassethound X Saluki F 2 . The motor C-R was 

 used in this dog. The conditioned stimuli were Met. 120 

 (positive) and Met. 42 (negative), and the C-R was stand- 

 ardized for 8 months before the operation. 



This dog was somewhat nervous in general reactions. He 

 was of a thin build and his skeletal movements were quick 

 and jerky. Motor reactions could be aroused with the slightest 

 stimulus. He was continually running about the pen and 

 barking in a frenzied fashion at the other dogs, and was 

 always slightly shy of people. The defensive motor C-R was 

 formed quickly in five trials, and was absolutely stable 

 throughout the normal period. The dog showed some degree 

 of restlessness in the laboratory during the experiments. 

 This was characterized by movements in the intervals be- 

 tween stimulations and was especially noticeable after at- 

 tempts were made to form differentiations. 



The procedure with this dog was somewhat different from 

 that with animal 869 in the preceding experiment. It was 

 thought that a chronic state of partial parathyroid deficiency 

 might be brought about if at the operation a minute portion 

 of parathyroid tissue was left behind as a transplant. Ac- 

 cordingly, the thyroid and parathyroids were removed and 

 a small portion of one of the parathyroid bodies dissected 

 away from the thyroid lobe and transplanted into the fascia 

 near the thyroid region on the right side. 



Parathormone (Collip), 10 to 20 units daily, was given 

 subcutaneously just before and for 3 days after the operation, 

 along with 10 gms. daily of calcium lactate by mouth. This 



