

Inn- re/inn ft 'I j'mm Cailiard's Medical 



Journal, _ hy >,,, m 



in tli, /,rnj, 



MBTH <'tBccums IN THK EMBBYO: PLAO 



FFLE THE Ax.UX" IlESPIKAT 



BKPIRATIOX ix THK XEW-BOBX : THE CHANGE is MECHAXICS wmcn THB 



YI58 TO THE AlB-CHAUBEB IX THE EGO. 

 \I Di THE TISSUES Or THE WoMB.* 



Br W. H. TKII'I.riT. .V I 



M 



seen that respiration and circulation most be treated together, since 

 i a connected movement for pumping the commerce in and through the 

 organism for elaborating structure and evolving force, and ***** the whole 

 founded in the power of producing rhythmical changes in pressure, the fluids 

 flowing from high to low pressure in conformity with organic law ; that the 

 stines and bloodTeasds are necessarily allied in respiration in order 

 to make importation and transportation a connected movement between the 

 ceD-timod and environment, which the scheme calk for. In other words, that 

 xstptM? action in respiration compel* the commerce in the Teaauh, while the 

 action in the heart, arteries and venous system circulates it through the organ 

 the action being unified throughout by means of the nerroas com- 

 binatians in the medulla oblongata, in which the respiratory, raso-motor 

 dontary motor centres, are correlated, the one calling for the other, as has 

 folly set forth in the preceding pages, and that the vital phenomena, 

 :nical and physiological, appertaining to respiration, circulation absorp- 

 tion, etc., are readily explained and accounted for, giving absolute proof of 

 the correctness of the premises, as before remarked. We now follow this 

 matter a little farther, and take op 



CI BrrLATIOX IX THE EXBBTO, 



a subject which, it most be admitted, is at present veiled in deep obscurity. 

 This is nevertheless susceptible of ftrjJhmmtitw^ The embryo is an aquatic 



""" * y ""* *-'~ri I ' *~ r-" " "**-* "~- T ruiinnaij if tii 



Body : or. tfte Xeehaoic* in Scepintjoo. airrtrttM Absorption. Etc.,- ehapun zrt Md rrii. 



r 



