How did Sinclair describe how meat could become contaminated by rats?

According to Sinclair, Rancid Meat was made to extract the bone and insert in the whole a white/hot iron ... The meat was stored in great piles in rooms that were wet and filthy, covered with rats. The meat was poisoned and contaminated.

Answer:Rancid Meat was made to extract the bone and insert in the whole a white/hot iron ... The meat was stored in great piles in rooms that were wet and filthy, covered with rats. The meat was poisoned and contaminated.