. Carnegie Institution of Washington publication. Pulse and Respiration. 103 of any one experimental day. In figure 13 a curve is shown for each of the six days, the average for the day not including period 1. Light lines and heavy lines have been used to differentiate between the alcohol and non-alcohol days. It is apparent at once, in the pre-tetanus sec- tions of the curve, that the light-line curves for the alcohol days are grouped at a higher level than the three heavy-line or normal curves. In the tetanus section this grouping does not persist and there is great. 65432 1 1234567 1 345678
. Carnegie Institution of Washington publication. Pulse and Respiration. 103 of any one experimental day. In figure 13 a curve is shown for each of the six days, the average for the day not including period 1. Light lines and heavy lines have been used to differentiate between the alcohol and non-alcohol days. It is apparent at once, in the pre-tetanus sec- tions of the curve, that the light-line curves for the alcohol days are grouped at a higher level than the three heavy-line or normal curves. In the tetanus section this grouping does not persist and there is great. 65432 1 1234567 1 3456789 10 Fig. 13.—Average duration of pulse cycles given in hundredths of a second for three normal and three alcohol days during pre-tetanus, tetanus, and post-tetanus periods, after the control or alcohol dose. confusion in the crossing and recrossing of the different curves, although the alcohol curves tend to remain above the normal curves. In the post-tetanus section there is more scattering, the alcohol curves par- ticularly being less closely grouped, but always at a higher level than the normal or heavy curves throughout nearly the entire period repre- sented. In one instance the curve for the second alcohol day crosses the curve for the third normal day near the latter portion of the post- tetanus division. The curve for the last alcohol day, July 4, reaches the highest level in the post-tetanus division and is also, on the average, the highest in the tetanus section; furthermore, it shows the smallest drop immediately after the tetanus. From this diagram it is certain that the relations shown in figure 12 are not due to the fact that any one day exercises a predominating influence upon the shape of the curves. If we selected anyone of the alcohol days and anyone of the normal days. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly
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