Four-Day Planet by H. Beam Piper

Dad called the spaceport hospital, after dinner, and talked to Doc Rojansky. Murell was asleep, and in no danger whatever. They'd given him a couple of injections and a sedative, and his system was throwing off the poison satisfactorily. He'd be all right, but they thought he ought to be allowed to rest at the hospital for a while.

By then, it was time for me to leave for Hunters' Hall. Julio and Mrs. Laden were having their dinner, and Dad and Bish went up to the editorial office. I didn't take a car. Hunters' Hall was only a half dozen blocks south of the Times, toward the waterfront. I carried my radio-under-false-pretense slung from my shoulder, and started downtown on foot.