SRL for [the accident]: That if the jury believed that the steamboat , by keeping her course , would have run upon the snag , and that if in order to save the steamboat the pilot changed her course , and run the keel - boat upon the snag , the steamboat ought to pay for the keel - boat ; but if [the accident] was inevitable to the keel - boat by keeping their course , and if by a change of the course of the boats , the steamboat would have been injured , defendant was not liable for the loss .
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