ee 
DIE KONTINUITAT DER ATOMVERKETTUNG. 365 
— of the irritable organ—those by means of which a stimulus 
onducted—consist of molecules called, on niece theory that 
ante -radicles are contained in them, ON- molecules. Each o 
these CN-molecules is of high complexity, consisting of thousands 
of atoms, and it lies surrounded by unorganized (leblos) substances, 
such as ean carbohydrates, &¢., or by organized (lebende 
molecules which take no part in the conduetion of a stimulus, 
es m 
CN-molecules may be of cylindrical form, the surfaces facin ns ie! 
rds the surrounding medium are polarisable, or, a sage d 
alternative, the CN-molecules may stand in contact with one 
anot In view of the multitude of processes taking place are 
the surface of the CN-molecules cannot be homogeneous, but i 
must be chemically heterogeneous. The CN-molecules must be 
regarded as having a fixed orientation, their arrangement being 
linked molecules Ciistertodleesin), The inabili 
fragments of a cell to continue living and forming cellulose walls, 
and the change of form undergone by the nucleus after continued 
Pig igre of a stimulus to certain cells, these and ant facts are 
to be regarded as the expression of a chemical union betwe 
nuclear- and plasma-structures, and it is to this sbieileal « continally 
that the author attaches great importance. The relation between 
stitution of en mae se as a network inet ny in a fluid. We 
thus reach the conception of a reticulate structure of chemically 
continuous living molecular groups, the interspaces between which 
are filled with nutritive flui 
In the Nitella-cell a stimulus is conducted along both the resting 
and the streaming la er of the protoplasm, and each of these waves 
of stimulation is by itself capable of bringing the streaming to a 
stop as a egg sei of a change in the chemical relation between 
the respective atoms composing the layers. Rotation is therefore 
the result of chemical contact set up between the atom-groups of 
the two la os ers. 
the reader to eidernand his meaning. SM. 
