The other detail that caught his eye was the gleaming of the small devices that Hooke was sorting out on the table. In addition to the various magnifiers that Hooke always had with him, there was the crooked probe that would be inserted up the length of the patient's urethra to find and hold the stone. Next to it was the lancet for making the incision through the scrotum and up into the bladder. Then a hook for reaching up through that opening and pulling the stone down and out between the testicles, and an assortment of variously sized and shaped rakes for scraping the inside of the bladder and probing up into the ureters to find and withdraw any smaller stones that might be a-building in the crannies. There was the silver pipe that would be left in his urethra so that the uproar of urine, blood, lymph, and pus would not be dammed up by the inevitable swelling, and there was the fine sheep-gut for sewing him back together, and the curved needles and pliers for drawing it through his flesh. But for some reason none of these sights perturbed him so much as the scale standing by at the end of the table, its polished brass pans flashing inscrutable signals to him as they oscillated on the ends of their gleaming chains. Hooke, ever the empiricist, would of course weigh the stone when it came out.