"Ain't he?" retorted the boatswain in a very offensive manner.  "While he's in my watch I'm goin' to be the judge of what he's fit to do, and what he's not fit to do; and I say he's quite fit to do the job that I've ordered him to do.  And he's goin' to do it too, or I'll know the reason why.  And, what's more, I won't have no brass-bound young whipper-snappers comin' for'ard here to interfere with me and tell me what I'm to do and what I'm not to do; and I hope that's speakin' plain enough for to be understood, Mr Midshipman What's-your-name.  Now then," he continued, turning to Martin again, "will you obey my orders, or must I make yer?"  And he took a fresh grip upon the rope's-end with which he was threatening the man.