. Lectures on natural and difficult parturition . effect of these contractions. In the firststage, they are sharp, severe, but short in their duration. Theyare called, in obstetric language, grinding pains.^^ In thesecond stage, they are less acute, perhaps dull, but are steadyand long-continued ; a full inspiration is taken previous to theircommencement, and the pain is expressed by a gradual expira-tion, accompanied by a deep tone of voice. These pains arecalled hearing painsy^ and their deep continuous groan forms 74 LECTURES OM PARTURITION. a Strong contrast to the shrill and almost agoniz
. Lectures on natural and difficult parturition . effect of these contractions. In the firststage, they are sharp, severe, but short in their duration. Theyare called, in obstetric language, grinding pains.^^ In thesecond stage, they are less acute, perhaps dull, but are steadyand long-continued ; a full inspiration is taken previous to theircommencement, and the pain is expressed by a gradual expira-tion, accompanied by a deep tone of voice. These pains arecalled hearing painsy^ and their deep continuous groan forms 74 LECTURES OM PARTURITION. a Strong contrast to the shrill and almost agonizing cry that ac-companies the grinding pains. When the action of the uterusis so much increased, you must perceive the obvious hazard thatwould arise if the adaptation of the head to the pelvis were notexact; if the former were too large, or the latter too small,serious danger might be the consequence. Hence, the secondstage af labour, and the passage of the head through the pelvis,requires your closest attention. It is necessary for you to un-. The head above the brim of the Pelvis ; the anterior and posteriorfontanelles being nearly on the same level. jSTote —In order to render the relation of the Head and Pelvis moreintelligible, the pubic side of the pelvis is represented as being trans-parent in this and the following views. derstand all its varieties, not in theory only, but also to takeevery opportunity to make yourself practically acquainted withthem. We would urge this upon you with the greater earnestness,because it too frequently happens that the practitioner is satisfiedif he can distinguish the head, without caring much about itsposition, and hence decides upon the necessity for interference,not by his knowledge of the cause of the difficulty, but thelength of time this stage may occupy. We would thereforerecall to your recollection the observations which we made when PROGRESS OF THE HEAD THROUGH THE PELVIS. 75 describing to you the obstetric anatomy of the pelvi
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