The plan of the central nervous system is therefore that of the Arthropoda.
In 1802 he published a series of engravings of original drawings, showing the anatomy of the brain and nervous system.
Where the nervous system is exhausted, such warm and moist climates as Malaga, Madeira, Tenerife and Grand Canary are suitable.
Wassermann and Takaki in the case of tetanus, that there do exist in the nervous system molecules with combining affinity for the tetanus toxin.
Natural immunity against toxins must be taken into account, and, if Ehrlich's view with regard to toxic action be correct, this may depend upon either the absence of chemical affinity of the living molecules of the tissues for the toxic molecule, or upon insensitiveness to the action of the toxophorous group. It has been shown with regard to the former, for example, that the nervous system of the fowl, which possesses immunity against tetanus toxin, has little combining affinity for it.
