THE CANCER PROBLEM 121
tion and disappearance of these asexual structures, sometimes quick, are often exceedingly slow, though sure. Not that it is likely that the surgeon has removed his last malignant tumour, but that, as one of the results of the work* begun more than sixteen years ago, the physician has possibly had forged for him a light and not dangerous weapon, only second, if not equal, in potency to the surgeon’s knife.**
* Most of the work has been carried out in Edinburgh, latterly with grants from the Moray Research Fund and Carnegie Trustees.
** As later events have proved, this estimate—with deference to certain transparently anonymous critics—was much too modest. The pancreatic ferments, trypsin and amylopsin, when directed scientifically against the living cells of cancer or sarcoma, are infinitely more potent than the knife of any surgeon !