published one cautious paper on phage in plague, which was mentioned in numerous scientific journals. Even the harassed Gottlieb was commendatory, though he could give but little attention and no help. But Terry Wickett remained altogether cool. He showed for Martin's somewhat brilliant work only enough enthusiasm to indicate that he was not jealous; he kept poking in to ask whether, with his new experimentation, Martin was continuing his quest for the fundamental nature of all phage, and his study of physical chemistry.
Then Martin had such an assistant as has rarely been known, and that assistant was Gustaf Sondelius.
Sondelius was discouraged regarding his school of tropical medicine. He was looking for new trouble. He had been through several epidemics, and he viewed plague with affectionate hatred. When he understood Martin's work he gloated, "Hey, Yesus! Maybe you got the t'ing that will be better than Yersin or Haffkine or anybody! Maybe you cure all the world of plague—the poor devils in India—millions of them. Let me in!"
He became Martin's collaborator; unpaid, tireless, not very skilful, valuable in his buoyancy. As well as Martin he loved irregularity; by principle he never had his meals at the same hours two days in succession, and by choice he worked all night and made poetry, rather bad poetry, at dawn.
Martin had always been the lone prowler. Possibly the thing he most liked in Leora was her singular ability to be cheerfully non-existent even when she was present. At first he was annoyed by Sondelius's disturbing presence, however interesting he found his fervors about plague-bearing rats (whom Sondelius hated not at all but whom, with loving zeal, he had slaughtered by the million, with a romantic absorption in traps and poison gas). But the Sondelius who was raucous in conversation could be almost silent at work. He knew exactly how to hold the animals while Martin did intrapleural injections; he made cultures of Bacillus pestis; when Martin's technician had gone home at but a little after midnight (the garçon liked Martin and thought well enough of science, but he was prejudiced in favor of six hours daily sleep and sometimes seeing his wife and children in Harlem), then Sondelius cheerfully sterilized glassware and needles, and lumbered up to the animal house to bring down victims.
The change whereby Sondelius was turned from Martin's
