236 Prof. K. F. H. Marx's Memoir of the Life and 



have the power of seeing distinctly in two media of such dif- 

 ferent degrees of density as air and water. He was the first to 

 point out accurately the nature and the character of the frontal 

 sinuses,* as well as their relations to diseases. The crossing of 

 the nerves of sight he regarded as an ascertained fact.f He 

 did not feel justified in adopting the belief in a muscular coat in 

 the gall-bladder. $ With regard to the protrusion of the eyes 

 in the case of individuals beheaded, || he pointed out that the 

 phenomenon was not entirely caused by congestion, as it is 

 in that of persons who have been hanged. While making a 

 communication " On a Male Goat which afforded Milk,"§ he 

 spoke of the occurrence of milk in the breasts of men, and 

 endeavoured to find an explanation of the phenomenon. 



His " History^! and Description of the Bones of the Human 

 Body," in which this of itself uninviting subject is treated in 

 the most interesting and novel manner, will also possess a per- 

 manent value. His Handbook** of Comparative Anatomy was 

 not only the first of its kind in Germany, but in the scientific 

 world. Before his time no book on the entire science had ap- 

 peared ; he first introduced it into the circle of subjects of in- 

 struction. 



One of his first productions treated of the Alcyonelke,tt 

 found in water near Gottingen. He also furnished a compara- 

 tive view of warm and cold blooded animals, ++ and afterwards 

 a comparative view of warm-blooded viviparous and oviparous 

 animals. || || We must not pass over in silence bis observations 



* Prolusio anat. de sinibus frontalibus, 1779. His Programme -when ap- 

 pointed ordinary professor. See Gb'tt. gel. Anz. 1779, p. 913-910. 



t Gott. gel. Anz. 1793. No. 34, p. 334. 



t Ibid. 1806. No. 135, p. 1352. 



|| Abhandl. der Phys. Med. Societiit. zu Erlangen, 1810. Part 1, p. 471. 



§ Hann6veriscb.es Magazin, 1787. No. 8, p. 753-702. 



% First of all in 1780, and then in 1800. 



*•* First published in 1 805. 



tt Gutting. Magaz. 1780, p. 117-127. 



Xt Specimen physiologic comparatrc inter animantia calidi et frigidi san- 

 guinis, 1780. Comment, vol. viii. p. 69-100. 



HI Spec, physiologiae comp. inter animantia calidi sanguinis vivipara et 

 ovipara, 1788. Comment, vol. ix. p. 108-129. Compare Gott. gel. Anzi 

 1789, No. 8, p. 73-77. In this treatise he gives his views on the occurrence 

 of the yellow bodies in the unimpregnated ovum ; on the formation of the 



