Sentence:  ... with usefull and generous labours preserving the bodies health, and <WSD>hardinesse</WSD>; to render lightsome, cleare, and not lumpish obedience to the minde, 
Meaning of the word marked with <WSD> tags:  The quality of being able to withstand fatigue and hardship; ("of a plant") the quality of being resistant to cold or other environmental conditions.