Sentence:  […] an incensed political surgeon, who is not in much renown for his mercy, upon great provocations: who, without waiting for his death, will flay and dissect him alive; and to the view of mankind lay open all the disordered cells of his brain, the venom of his tongue, the corruption of his heart, and spots and <WSD>flatuses</WSD> of his spleen: and all this for threepence. 
Meaning of the word marked with <WSD> tags:  Morbid inflation or swelling.