. Fig. 6. Method of preparins termination of latent period. myogram for de- wave which is recorded most nearly between MO, and multiplying this value by the number of millimeters in the recorded latent period. To determine the period of contraction, draw TO per- pendicular to MN and tangent to the muscle curve at Q. With a radius equal to the length of the writing lever and a center on the base line traced by the muscle lever, as at R, revolve to Q to the base line at S, draw the perpendicular UV through S, and estimate the number of thousandths of a second between 0 U. To do this count the co
. Fig. 6. Method of preparins termination of latent period. myogram for de- wave which is recorded most nearly between MO, and multiplying this value by the number of millimeters in the recorded latent period. To determine the period of contraction, draw TO per- pendicular to MN and tangent to the muscle curve at Q. With a radius equal to the length of the writing lever and a center on the base line traced by the muscle lever, as at R, revolve to Q to the base line at S, draw the perpendicular UV through S, and estimate the number of thousandths of a second between 0 U. To do this count the complete waves, and estimate in tenths the fractions of waves. The line UV must not be drawn through 0, because the distance WQ is due to the fact that the muscle lever draws an arc instead of a straight line. To' determine the period of relax- ation, draw XY through the point where the muscle curve strikes the base line at A^. State in notes length of latent period, contraction period, and relaxation period, in tabular form. Also mention the most likely sources of error.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
