LIVING AND FORMED MA TTER, AND PAB UL UM. 3 5 



The terms Living Matter, Formed Matter y and 



Pabulum. 



Since many kinds of formed matter had been called 

 protoplasm as well as the matter which is in the living state, 

 I should have been wrong if I had employed that term in 

 speaking of living matter. From the time when my re- 

 searches were made to the present, the confusion in the use 

 of the word protoplasm has increased, until every form of 

 tissue has been thus called, as well as every kind of germinal 

 or living matter. And it would only add to the existing 

 confusion if any attempt were now made again to alter the 

 meaning of the word ; so that, upon the whole, it seems 

 better to use the more simple term living or germinal matter 

 to denote the growing, active, moving substance which is 

 peculiar to everything living, and which is alone concerned 

 in the multiplication, growth, and formation of all tissues 

 and organisms. 



Living or germinal matter, formed matter, and pabulum, 

 are the only terms required in describing the development, 

 formation, and growth of any tissue, the production of 

 secretions, and other phenomena peculiar to living things ; 

 and I have ventured to suggest the use of these terms, 

 because they have the advantage of being simple. They 

 can be accurately defined and distinguished from other 

 terms. They are short, expressive, and can be remembered 

 without difficulty, and there is certainly an absence of that 

 mysteriousness which hangs about so many of our scientific 

 words in ordinary use, and greatly adds to the difficulties 

 experienced by the student. 



D 2 





