ON NEURAL EXCRETION 81 



logical working of vital energy on organic plasma results, 

 in the state known as disease, in waste, decline, or atrophy, 

 or in increase or hypertrophy, according to the formative 

 proportions of the pathogenic elements of growth, both 

 dynamic and material, or by the perversion of these 

 elements of growth into a condition known as hetero- 

 genesis, in which come to be displayed, in one form 

 or another, organic structures of greater or lesser malig- 

 nancy, according to the position and character of the 

 structural elements involved, and the length of time to 

 which the diseased process has extended. By the degree 

 of normal inter-action on each other of the formative ele- 

 ments of vital energy and organic raw material, a normal 

 or healthy tissue is involved, while the want of that normal 

 inter-action results in the evolution of an abnormal or 

 unhealthy tissue, in proportion to the character and dura- 

 tion of the abnormal condition, which may be either 

 atrophic, hypertrophic, or heterogenetic and malignant, and 

 may consist in, or arise from, want or superabundance, or 

 the perversion of either or both elements the dynamic or 

 the material. 



The heterogenetic or malignant, therefore, emanates 

 from the normal tissue elements, on conditions entirely 

 dependent on the formative elements, plus the influence 

 of altered metabolism, due to the departure from normal 

 inter-action of these elements the physiological giving 

 place to the pathological, along lines defined by histology 

 and anatomy, and, therefore, necessarily conformable to 

 existent morphology in each and every instance. 



The human body par excellence, composed as it is of 

 two distinct systems of dynamic and organic machinery, 

 so to speak, actuated and operated by the sympathetic and 

 systemic nervatures respectively separately and in con- 

 junction, is liable to break-downs emanating from one or 

 both of these systems ; hence it becomes a scientific neces- 

 sity to discover the " sequence of events" constituting the 

 particular example of disease on which attention for the 

 time being is being bestow r ed, in order to arrive at definite 

 and correct conclusions, on which to found a treatment by 

 which it may be possible to rectify the faulty working of 

 these organic machineries, so far as it is possible to do it, 



