chemism

noun

1. (obsolete)Chemical attraction.

   “[A]n actual progress of the blood in the pulmonary vessels is brought about [by potassium iodide], a phenomenon explaining the incontested superiority of iodine in all dyspnoeas, which have their origin in a disturbed state of the chemism of respiration, as well as in those of a nervous, arithmatic or cardiacal nature, the latter being connected with blood stagnations in the pulmonary vessels.”