" Antonio Aiaate. „ 37 



ínembered thafc the muscular wave moves along the muscles 

 of ants in í$uoh a way tKat it is observable «nder the micros- 

 <}ope. This could not be the case in a homogeneous liquid. 



((i) Naturalists faithfuí to the oíd school would find a 

 reinarkable "híU'mony" in the following fact: — 



According to Van Beneden the intestinal worms of bats 

 enter into a peviod of hibernal sleep at the same time as their 

 hosts. That is to say that the deep protoplasmie enrrents 

 are delayed.both in the host and its parasite by laek of notj- 

 rishment. 



SUMMARY (CONCERNING EYERY LIVING THING). 



Nutritive currents are endowed wlth a very great veloci- 

 ty in active life. 



Nutritive currents (sap,blood, protoplasmie currents) are 

 periodically delayed by the want of the reserves expended du- 

 riug the day, and the result is sleep. 



The same currents raay be less active during the day on 

 aecount of inaction or of some other cause^ and the result is 

 lack of sleep. This may also be ascribed to nervous excita- 

 tions. 



Currents delayed by the constant action of cold — Sleep 

 in "winter. 



Currents delayed by an excess of external heat — Sleep in 

 summer. 



Currents delayed or even utterly prevented by lack of 

 moisture — Latent life. 



General co-ordinated currents definitely stopped by coa- 

 gulation, poisoning, hemorrhages, asphyxia, etc. — Death. 



An Artificial Schematic Organism. 



The principal varieties of sleep, life, and aetivity may be 

 illustrated by an organism which I have constructed. It can 



