Sentence:  Now , driving the horse and sulky borrowed from Mynheer Schuyler , he felt as if every bone was topped by burning oil and that every muscle was ready to dissolve into <WSD>jelly</WSD> and leave his big body helpless and unable to move . 
Meaning of the word marked with <WSD> tags:  an edible jelly (sweet or pungent) made with gelatin and used as a dessert or salad base or a coating for foods