...the force produced by the involuntary contractions of the womb itself." 3. The third conclusion is, " that, on an emergency, somewhat more than a quarter...refuses to come into the world in the usual manner." ... " Adding together the combined forces of the voluntary and involuntary muscles, we find — Involuntary...

...Involuntary muscles •» 54.1 06 Ibs. Voluntary muscles, = 523.65 „ Total, . . . 577-76 Ibs. av. Thus, we see that, on an emergency, somewhat more than a...to determine, by actual experiment, the expulsive * The preceding result will, no doubt, remind the curious and well-informed reader, of the statement...

...the power of the uterus is 54 lbs., that of the voluntary muscles can be 523 Ibs. Haughton believes that on an emergency somewhat more than a quarter...refuses to come into the world in the usual manner. Duncan points out that such a pressure represents a strain to which the maternal machinery could not...

...maximum resistance of 3-1 Ibs. The additional force of the abdominal muscles so raises this figure that on an emergency somewhat more than a quarter of a ton pressure can be brought to bear. The author's words rather discourage the use of chloroform and other anaesthetics in labour; but here...

...maximum resistance of 3-1 Ibs. The additional force of the abdominal muscles so raises this figure that on an emergency somewhat more than a quarter of a ton pressure can be brought to bear. The author's words rather discourage the use of chloroform and other anaesthetics in labour; but here...

...Duncan and Schatz, since that first publication of his, Dr. Haughton still gravely writes :— "Thus, we see that, on an emergency, somewhat more than a...refuses to come into the world in the usual manner." It is only necessary to explain that this is assigned not as the whole pressure on the surface of the...

...Duncan and Schatz, since that first publication of his, Dr. Haughton still gravely writes :— " Thus, we see that, on an emergency, somewhat more than a...refuses to come into the world in the usual manner." It is only necessary to explain that this is assigned not as the whole pressure on the surface of the...

...Duncan and Schatz, since that first publication of his, Dr. Haughtoti still gravely writes :— " Thus, we see that, on an emergency, somewhat more than a...refuses to come into the world in the usual manner." It is only necessary to explain that this is assigned not as the whole pressure on the surface of the...

...Duncan and Schatz, since that first publication of his, Dr. Haughton still gravely writes :— "Thus, we see that, on an emergency, somewhat more than a quarter of a ton pressure can ba brought to bear upon a refractory child that refuses to come into the world in the usual manner."...

...expulsive power of the uterus and abdominal muscles in ordinary labour, and ridiculed his statement that " on an emergency somewhat more than a quarter of a ton of pressure can be brought to bear on a refractory child which refuses to come into the world in the...