Sentence:  The attempts which are made in such [school] courses [on ‘hygiene'] to make as many physiological phenomena as possible point a moral, and to suppress the rest, are reminiscent of the analogous attempts to <WSD>moralize</WSD> zoology which were made by the authors of mediaeval bestiaries. 
Meaning of the word marked with <WSD> tags:  To give a moral quality to; to affect the moral quality of, either for better or worse.