156 THE HUMAN EMBRYO. 



Four Months. — Embryo 155 mm. The foetus shown in figure 98 came in a 

 very fresh condition, January 2, 1887, with the statement: "Conception said 

 to have taken place September i, 1886; foetus came away January 2, about 

 noon," The embryo is typical in size and development for four months, except 

 that the crown is higher than usual, and the antero-posterior diameter of the 

 head somewhat below the average. 



The natural attitude in utero is similar to that of figure 96 ; the attitude 

 shown is that assumed by the foetus when released from the membranes. 



