168 DETAILED SYNTHESIS. 



nucleus, from which the granules appear to take their 

 rise in some cases, and in others from which new cells 

 spring up. 



104. IN SOME INSTANCES THE GRANULES DEVELOP 



into new cells, and in some they become arranged in the 

 form of fibres. 



105. THUS THE EARLIEST APPEARANCES IN THE FOR- 



MATION OF TISSUES ARE the formation of granules, fibres, 

 and membrane, in a homogeneous Fluid containing the 

 proximate principles essential to the constitution of the 

 Tissues. 



( Homogeneous Liquid. 



Homogeneous Membrane. 



106. THE IMMEDIATE CAUSE OF THESE PRIMARY 



FORMATIONS is the influence of the previously formed 

 membrane constituting the walls of the cell, without 

 which the homogeneous fluid can never be developed 

 into tissue. 



107. ALL LIVING THINGS, WHETHER VEGETABLE OR 

 ANIMAL, take their rise from such a cell : its components 

 in that form and condition have the power of communi- 

 cating to other similar material the power they them- 

 selves possess, with such modifications as the exigency 

 requires. 



108. THE CELLS HAVE TWO POWERS : 1st, that of 

 forming themselves from the appropriate materials, and 

 2d, that of modifying their contents, each of which is 

 called the power of secreting, though, as they differ in 

 their character, they should be called by different names ; 

 and in this work the former will be called nourishing, 

 and the latter secreting. 



109. IT is ALSO REMARKABLE that the parent-cells 

 will bestow upon their offspring the power of secreting 



104. What do -? 105. What ? Write table. 106. What ? 107. What 

 Mid ? 108. What ? 109. What ? 



