256 APPENDIX. 



developed in the bowels ; though this is perhaps the least objectionable 

 supposition. At any rate the parent animal could not live in the ali- 

 mentary canal, since the larva has been recognised by several entomologists 

 as being that of a well-known fly (the Anihomyia canicularis) . The 

 latter supposition, however, which I have advanced, namely, that the fly, 

 having its eggs previously impregnated, may have been swallowed, and 

 thus, perishing in the digestive canal, have left the ova unencumbered, 

 and in a possible situation for development, derives some countenance 

 from the circumstance of the extreme rarity of the occurrence of these 

 larvae as parasites, there being, as I have mentioned, very few cases on 

 record ; which would give to the circumstance the air of an accidental 

 occurrence, of which, however, it is again immediately robbed when we 

 contemplate the singular and very obvious adaptation of its organization 

 to the peculiar circumstances in which it is thus placed. The anatomy 

 being clearly that of an animal destined, or at least adapted, to live by 

 adhesion and suction on fluid nourishment, though it is clear from the 

 fact of some being found nearly two thirds grown in simple river water, 

 that the larva is also capable of life and growth in other elements than 

 the contents of the alimentary canal, and in other capacities apparently 

 than that of a parasite. 



" Much, it appears, may be advanced on either side, and indeed the 

 whole subject appears to me to be calculated to afford interesting points 

 for discussion ; and it is chiefly with this view that I have brought it 

 before the notice of the Society." 



APPENDIX C, RELATING TO VEGETABLE PARASITES. 



I. 

 Appendix and Supplement to the Parasitic Plants, by the Author. 



Page 121. Kolliker and Scanzoni also found spare, thin, and 

 short ferment-fungi in the secretions of the Cervix uteri. 



Page 127. Treatment of Merismopcedia (Sarcina) Ventriculi. 

 Hasse also, in his most recent ' Clinical Reports/ commends most 

 of all nitrate of silver against this parasite, while he saw no 

 benefit from the hyposulphite of soda. Would not strong 

 spirituous drinks in moderate doses, as a spoonful of undiluted 

 rum, once or twice daily, quickly swallowed, particularly when 

 nothing else is drunk, be worth a trial ? 



Page 129. First Donne (' Cours de Microsc./ pp. 157 

 161, fig. 33), and after him Kolliker and Scanzoni (1. c., p. 12 

 and fig. 6), found in vaginal mucus fine, stiff threads, 0-04 



