Harris Hawthorne Wilder -ill 



3. Gustav Evrard. Case described by Guerin. The parasite consisted of 



two imperfect legs depending from the left buttock; but, as in 

 the case of Louise L., there were no doubled parts in the autosite. 

 This last fact, as well as the complete asymmetry of the parts, 

 suggests that it is a case of parasite and autosite, although in 

 many ways both this and the preceding are similar to Blanche 

 Dumas and others cited under I, h and i. 



4. Winslow's case. A girl of twelve, who died at the Hotel Dieu, in Paris, 



in 1733. A parasite female lower half hung from the left flank. 

 Sensibility was common, i. e., felt by the autosite. 

 c. Parasite attached to head of the autosite. 



This is frequently in the form of a supernumerary head or merely a face, 

 and may be attached to the side or back of the head, or in some other place. 

 Home, 1790, figures a case in which the supernumerary head is attached by 

 its vertex to the vertex of the autosite.* 

 A parasite attached to the jaw bone is termed an epignathus. 



2. Parasite Developed Withix the Altosite, tsually in the Body Cavity, 

 BUT Occasionally in Other Regions. These Forji Tumoks which 

 USUALLY Increase and have to be REMO^'ED by Opeeative ^Measures. 

 Commonly Termed " Fetus in Fetu." 



These cases, which it is not necessary to classify in detail, have been rather 

 commonly reported for several hundred years; the parasite ranges in com- 

 pleteness from an almost perfect fetus to a shapeless mass containing bits of 

 organized tissue, the so-called teratomata or dermoid cysts. Thus Blundell, 

 28-29, reports the case of " a boy who was literally and without evasion with 

 child, for the fetus was contained in a sac communicating with the abdomen 

 and was connected to the side of the cyst by a short umbilical cord; nor did 

 the fetus make its appearance until the boy was eight or ten years old, when 

 after much enlai-gement of pregnancy and subsequent flooding, the boy 

 died." The parasitic fetus is, however, seldom as perfect as in the above but 

 is more often quite rudimentary. In one case it consisted of " the ribs, the 

 vertebral column, the lower extremities as far as the knees, and the two 

 orbits"; in another "fetal bones and a mass of macerated embryo" and in 

 another " hair, molar teeth, and other evidences of a fetus." In general such 

 parasites show themselves in the autosite during the infancy or childhood of 

 the latter, but, again, they may not appear until adolescence or even adult 

 life. In location such enclosed parasites may be almost anywhere — the abdom- 

 inal or thoracic cavities, the cranial cavity, the spinal canal, the scrotum, 

 or urinary bladder. 



ORIGIN OF COMPOSITE MONSTERS. 



To one who sees in separate duplicate twins the result of the total 

 separation of the first two blastomeres of a developing ovum there is 

 but one rational explanation for diplopagi, or those composite monsters 



* This case may have been that of Craniopagi, one component of which had 

 suffered an early fetal amputation at the neck. See above, under Craniopagi. 



