TISSUES IN GENERAL. 135 



of the contractile matter may be suspended; and blood-vessels 

 arise from the formation of vacuoles (see page 36), containing 

 from their very origin a liquid in which isolated lumps of living 

 matter are suspended. 



RESEARCHES AND DEDUCTIONS SINCE 1873. 



I have purposely given an accurate translation of my 

 assertions in 1873, in order to show that the cell-theory and 

 its consequences, in the light of my investigations, had to be 

 abandoned. At present, after nine years' further research, I 

 have nothing to alter in my previous statements, and but little 

 to add. 



Various publications, based on studies made in my laboratory 

 during the last seven years by unprejudiced observers, fully 

 corroborate the new views. Not only physiological and histo- 

 logical research, but pathological investigation as well, will 

 become more fruitful. Inflammation, tuberculosis, formation of 

 tumors in short, all morbid processes will be better under- 

 stood than is possible with cellular-pathological views. 



L. Elsberg, in 1875,* makes the following statements : 



" Not only in the wide domain of organic physiology, but 

 especially also in human pathology, the cell doctrine has been 

 accepted so universally that it seems to me eminently proper to 

 bring the new views to the notice of the American Medical Asso- 

 ciation, even at this early stage of their crystallization into a 

 complete doctrine. All that I shall present to you as histological 

 fact has been repeatedly observed and demonstrated by C. Heitz- 

 mann, both at Vienna and New York ; and a number of others, 

 as well as I, have been enabled to confirm his observations. 



" The ideas of humoral and solidistic pathologists long con- 

 tinued to influence medical teachings after Schwann's dis- 

 coveries of the elementary structure of tissues were generally 

 acknowledged as correct, and more or less consistently applied. 

 It was really not until Virchow promulgated his celebrated 

 lectures on cellular pathology, less than twenty years ago, 

 lectures which reached and deeply impressed the medical pro- 

 fession in every portion of the globe, that the cell-doctrine 

 has had undisputed sway." 



* Notice of the Bioplasson Doctrine. Transactions of the American 

 Medical Association, 1875. 



