the saccuc batten is growing nearer the udder regi n# but no scrotur 
appears. 
That this structure io a female om being sodified in the sale 
-traction is shown by the tendency to thicken in lb body cavity, but 
also inside a long aaeons vaginalis* 
An interesting o& e in this connection is that of a £9.) cm. 
fr?e-martin, in which the lsft oid? has a toetis already drawn Into 
the saceuo, and a guberaaculu?. thickened only in the sue, while the 
right side, on the contrary, has a round li.anent also t all thickened 
in the abdonen pushing the gonad farther tack fren the suocuc opening* 
This ceeas to be male on one side and fosaalo on the other, if one does 
not examine too oio ;ely. but on closer examination, tiu > gonads are 
seen to bo alike « cept in ,osition. ffee anomaly ic due to the failure 
of tha right aac penetrate the inguinal canal, and develop, while 
the left did so* and eo one s d developed in the female sooner ard 
the other in the sale. thif. can to understood when it is cocu.idersd 
how far the left i do, u-n a rule, is in advanoe of the* right in de¬ 
velopment, particularly of the male characters, the stimulation of 
the vftdrnl sac caused it to reach the inguinal canal on that aide 
before it clo-^d, or cau ht the left pricerdiua at its critical stage 
and caused the right to grow too slowly to pass the closing canal, 
or missed its critical eta e. In rany frao-mrtins tb sacs fail to 
penetrate on both aides as shown in Lillie*e (*1T) pap r and in many 
they penetrate on both. There would appear to be a ti~e when the 
penetration by the eaocuc i; inhibited* if the aectts hu.i not already 
passed a certain stage or point in the inguinal canal, the loft sescc 
to pass this stage earlier than the right and to bo in a condition to 
penetrate core often than the ri,iit • 
