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HERMAPHRODITE 



I 



\\ ' an 



al tlu ' 



mnd 



ular 

 . which, 

 the fluid aw 



spot, 

 [uinin 

 I'lii- tesl 



thite 



linin-sul] cur- 



.1- a 



u - ; in micros 

 lit. 



An annual, bien- 



which contains 



the ground at the 



H. -doctor. See Herbalist. 



\\ - juice Cure. 



ius rass]. In biology: 



( us that have a 



it the close ol the 

 in herbs. 



An old name tor a 

 ting a book on the 



Herbah>t .grass]. An herb-doc- 



itanic phy»irian. 

 Herbarium . grass]. A col- 



. lor study ; a horttts 



Herbicarnivorous •■ r-us) \kerba,hexb- 



eat]. < Jmnivorous ; 

 i animal and vegetable food. 

 Herbivora •. grass; vorare, to 



a division of mammalia. 



Herbivorous r, grass; vorare, 



term applied to animals 

 ition. 



Herbst's Corpuscles. A vai nsory end-organs 



\- mgue of '.he 

 mall \ ater's corpuscles, but 



closer to each other, while 

 r within the central core is bordered 

 nuclei. 

 Hercogamy a fence; >"» , 



prevention of impregna 

 -tructural obstacle ; 



:uleus morbus ' us mor'-bus) [I..]. 



luir]. Acquired 

 H. Disease. insmitted from 



H. Parts -ruinate. 



H Syphilis 



Her 'lily]. The 



ission of physical or 



pring. 



Theory of Heredity, or the Hypothesis 



I Ol the - 



if Els- 

 ol repro- 

 included in and i 



luce all of the 

 i. Weissmann's 

 ry of the Continuity or " Immortality " of 

 Gr «w'jpro] 



from the 

 ■iti.d 



the germ-substance of another generation, by the 



ollary that tlu- whole nature of the animal or plant 

 depends upon its germinal substance, and that the 

 resemblance of the offspring to the parent is due to 

 m gonoblasl containing some germinal matter. 

 ording t" Nussbaum and Weissmann the cells of 

 the embryo are separated into two kinds: (i) The 

 m-cells, which become the sexual elements; (2) 

 I he somatic cells or body-cells, used as building material 

 a m) of the individual. KSlliker and others 

 have demonstrated that no sharp distinction 1 \ists be- 

 tween germ cells and xnnatic cells, so that speculations 

 basedonsuch assumed difference necessarily fall to the 

 ground. Naegele's Theory of Idioplasm and Nutri- 

 tive Plasma, is a definite theoryof germinal continu- 

 ity ; he assumes the formative force to reside in a specific 

 material substratum, i. c, idioplasm — essentially iden- 

 tical with Weissmann's germ-plasma. Minot as- 

 sumes idioplasm to be the nuclear substance, chro- 

 matin, the essential factor in the function of heredity, 

 and the nucleus, therefore, the organ of hereditary 

 transmission. De Vries' Theory of Intracellular 

 Pangenesis, suggests that the nuclear substance of 

 the germ plasm is composed of minute particles, Pan- 

 genes, not cells, but the bearers of the properties of 

 the cells. There are also in the nucleus Nuclear 

 Rods, called aUo Idants, and Chromatin Rods, which 

 are built up of a series of ancestral plasms, called Ids, 

 each representing "an individuality." The doubling 

 and multiplication of these idants prior to fertilization 

 is in the interest of variety, or variation of form and 

 character of the subsequent individual. This theory 

 claims tin- same independence for all constituent parts 

 of the cell-body as Weissmann claimed for those of 

 the nucleus. The entire cell is called the Protoplast, 

 and its various living, independent parts are called 

 Pangenes. The cell is thus likened to a compound 

 organism or colony. 



Hering's Experiment. A delicate test of stereoscopic 

 vision in which the perception of degrees of depth is 

 tested by means of falling bodies, seen through a long 

 lube. H.'s Theory. See Color-sensation. 



Hermann's Difference-theory. See Difference. H.'s 

 Theory, a theory as to the causation of muscular con- 

 traction ; he claims that the formation of carbonic 

 anhydrid on contraction is not simply due to oxida- 

 tion, but rather to the decomposition of inogen, with 

 the formation of certain simpler products, of which 

 carbonic anhydrid is one, and sarcolactic acid and 

 myosin the others. 



Hermaphrodism, or Hermaphroditism (hor-maf- 

 ro-dizm, h'r-maf '-ro-dit-izm) ['Epuf/<_;, Mercury ; 

 \.<ppo(YtTTi , Venus]. The co-existence in a single in- 

 dividual of completely developed ovaries and testicles, 

 or of at least one of each gland. H., Bilateral, an 

 ovary and a testicle on each side. H., Complex, a 

 rare instance of hermaphrodism in which there are pres- 

 ent both the internal and external organs of either sex. 

 H., Double. Same as //. , Complex. H., Lateral, 

 an instance in which male organs (especially a testicle) 

 are more or less developed on one side, and female 

 organs (especially an ovary) on the opposite side. 

 H., Protandrous, applied to the phenomenon as ex 

 hibited by most hermaphrodite platode worms, of 

 developing the male sexual products before the female. 

 H., Spurious, doubtful, but not double, sex. H , 

 Transverse, an instance in which the external organs 

 indicate the one sex, and the internal the opposite. 

 H., Unilateral, on one side an ovary and a testicle, 

 on tie other an ovary or a testicle. H., Vertical. 

 Same as //. , Complex. 



Hermaphrodite (her-maf '-ro-dlt) ['K/n///(, Mercury; 



