OF TEMPERATURE UPON THE BEAT OF THE DOG’S HEART. 
081 
Number of 
observation. 
Time, p.m. 
Arterial pressure 
in left carotid, in 
millims. of Hg. 
Temperature 
in aortic arch. 
Pulse-rate 
per minute. 
Remarks. 
li. 
111. 
1 
3 
30 
100 
38-0 
237 
2 
3 
33 
102 
37-9 
234 
Since last observation one carotid 
3 
3 
40 
99 
38-5 
241-5 
cannula had slipped out and 
4 
3 
42 
98 
38-5 
244 
been replaced. 
5 
3 
44 
98 
41-5 
273 
6 
3 
46 
101 
40-5 
258 
7 
3 
47 
99 
40-9 
261 
8 
3 
48 
100 
42-0 
267 
9 
3 
52 
100 
42-0 
265-5 
10 
3 
53 
99 
42-5 
265-5 
11 
3 
54 
100 
42-5 
250 
12 
3 
55 
97 
39-5 
222 
Flask changed since last observa- 
18 
3 
57 
97 
37-0 
198 
tion; hence the rapid alteration 
14 
3 
58 
97 
36-0 
189 
of temperature. 
15 
3 
59 
97 
35-5 
175-5 
16 
4 
00 
98 
347 
169 
17 
4 
01 
97 
34-0 
162 
18 
4 
02 
98 
34-0 
165 
19 
4 
04 
98 
33-9 
153 
20 
4 
05 
- 99 
32-9 
144 
21 
4 
06 
100 
32-5 
140 
22 
4 
09 
98 
317 
124-5 
23 
4 
11 
100 
301 
105 
Pericardium cut away since last 
24 
4 
12 
100 
30-0 
105 
observation. 
25 
4 
15 
101 
29-9 
97 
26 
4 
17 
101 
29-5 
88 
27 
4 
19 
101 
29-0 
84 
28 
4 
21 
103 
28-5 
76 
29 
4 
23 
104 
27-5 
75 
30 
4 
26 
108 
27-3 
66 
31 
4 
27 
112 
28-0 
66 
32 
4 
30 
108 
28-1 
69 
33 
4 
32 
108 
29-5 
111 
34 
4 
33 
108 
31 5 
129 
35 
4 
34 
107 
32-5 
162 
36 
4 
35 
109 
34-0 
183 
37 
4 
36 
105 
35(F) 
150 
38 
4 
37 
107 
34T 
144 
39 
4 
39 
105 
33-5 
135 
40 
4 
41 
106 
33-5 
133-5 
41 
4 
43 
105 
34-0 
135 
Pulse irregular. 
42 
4 
44 
102 
34-7 
117 
Pulse regular. 
43 
4 
46 
Heart’s beat now became very 
irregular and experiment was 
discontinued. 
Experiment II. presents two points of special interest : in the first place the brain 
was removed and the cervical and dorsal spinal cord destroyed before the observations 
commenced, so that an additional security v/as obtained that no cerebrospinal centres 
were influencing the pulse rate. In the second place it is one of the cases in which the 
heart became considerably distended during the course of the experiment, so that the 
pericardium had to be cut away. As will be seen, this did not at all affect the general 
result. 
