26 



cellular tissue, forming extremely minute cavi- 

 ties, in which fluids are contained. It is dis- 

 posed in layers which intersect each other in 

 every possible direction ; and, interwoven as it 

 is with various other incidental textures, consti- 

 tutes what is called the tissues in general, 

 these combine and form organs organs com- 

 bine, and constitute, with the fluids, the entire 

 substance. But both the tissues and fluids of 

 organic bodies are said to be found, under a mi- 

 croscope of high powers, to consist of certain 

 globules of a definite form and size, so that it is 

 in fact of these that such bodies appear to be ac- 

 tually composed. These globules are represented 

 as found both in vegetables and in animals, and, 

 as well in the most rude as in the most perfect 

 species of each. The algee and fungi among the 

 former, and the infusoria and polypi among the 

 latter, are described as equally containing them, 

 both in their fluid and solid parts ; and in the 

 higher species of both plants and animals, they 

 are said to be still more perceptible. Of the 

 former, they are described as existing, not only 

 in the solid tissues, but in the proper sap, and in 

 the fecula, resin, albumen, colouring matter and 

 other substances formed from it ; and, of the 

 latter, not only in the cellular, nervous, mucous, 

 serous, fibrous, and muscular tissues, but also in 

 the blood, lymph, chyle, pancreatic fluid, milk, 

 saliva, fat, and other secreted substances. These 

 globules, then, may perhaps be regarded as the 

 final molecules of which organic bodies are com- 



