112 Causes and Course of Organic Evolution 



condensed and subtle energizing activity than either osmotic 

 pressure or any of the energies named above, while the con- 

 tinued energizing of the most peripheral cells also indicates 

 continued flow of a highly complex form of energy. 



In ordinary graft unions, and even more in graft hybrids, 

 union of the living cells seems to be correlated wdth currents 

 of bio tic energy. We would not deny in the above, nor in 

 many similar cases, that a still more complex or cognitic energy- 

 flow is also concerned, but to such we shall return later. 



In passing from the plant to the animal world, the rarity 

 or doubtful character of non-nucleate or acaryotic types pre- 

 vents study of purely protoplasmic masses amongst the lower 

 animals. But the continued vitality of the Amoebae, of many 

 Infusoria, and of some Sporozoa, when dried and kept for 

 months or even years, again indicates stored energy of an 

 organic grade of complexity. Also the striking studies of 

 Maupas (58: 165), verified and extended by subsequent ob- 

 servers, show that after a definite period of growth and division 

 the animals become smaller, senile, and then die. But the 

 rapid movements of these infusors, the amount of energy dis- 

 played during division and in elaboration of added protoplasmic 

 substance, all powerfully indicate again the existence and 

 conduction through the protoplasmic substance of streams of 

 bio tic energy. 



As in cases also of plant grafting, so in skin grafting, in trans- 

 plantation of limbs and even of body segments of lower animals, 

 likewise in blood transfusion, some condensed and yet readily 

 transformable energy seems alone to explain the perfect manner 

 in which union of the former and reactivation of tissues under 

 the latter treatment occur. For while in blood transfusion 

 the more perfect oxygenation of the patient's tissues may be 

 aided by infusion of the healthy blood corpuscles into the 

 blood vessels, and so give an exhilarated and strengthened 

 stimulus, this alone does not seem to explain the rapid resultant 

 benefit. When we remember also that the chemical consti- 

 tution of the haemoglobin of blood is C758Hi203Ni95O2i8FeS3 

 (57: 465), we get a faint idea of the enormous number of heat 



