S22 Dr Knox's Theory of Hermapkrodism. 



jects are viewed, but opaque ones are observed by the direct 

 operation of the unassisted elliptic mirror. 



The effect of this instrument, so constituted as to bring out 

 proof objects, which, so far as we know, are invisible by any 

 other engiscope or microscope whatever, viz. a set of lons^i- 

 tudinal lines on the scales of the Podura, in addition to the two 

 sets of diagonal ones already discovered, and two sets of dia- 

 gonal lines on the scales of the cabbage butterfly, in addition to 

 the longitudinal ones with the cross stricB hitherto observed. 

 The colours of a variety of objects are shown with uncommon 

 brilliancy, and a great number of delicate touches on a variety 

 of objects are brought out, which have escaped the penetra- 

 tion of other instruments. We shall, in a future number, 

 give the particulars of this grand and capital improvement, 

 which seems to surpass every thing yet executed, although no 

 less than six thin triple object glasses have been preposterous- 

 ly combined together in a rouleau for the purpose of accumu- 

 lating power and giving an unlimited angle of aperture. Such 

 clumsy and complicated constructions can never rival the 

 beautiful simplicity and true vision of perfect reflectors. 



Art. XXI. — An outline ofDr Knox's theory of Hermaphro- 

 dism, and the application of its principles to the generative 

 and respiratory organs 



Part I. — Theory of the generative organs^ and of the type 

 according to which they have originally been formed in all 

 animals. 



When the genital organs of both sexes came to be particu- 

 larly examined, anatomists, seeing that some of the female or- 

 gans resembled the male, and vice versa, supposed that they 

 were repetitions of each other, and that they were fundamentally 

 the same organs, only differently developed in the one sex from 

 what they were in the other. 



In man it was said that the organs are external, and in 

 woman internal ; for in man the uterus is turned inside out to 

 contain the ovaries, now become testicles. In pursuing this ana- 

 logy, the vasa deferentia were compared, to the Fallopian tubes, 

 the vesiculce seminales to the uterus, and the penis to the vagina. 



