the evening of the 17th December, he took his food and made no complaint of any illness or pain. At about 5-15 a.m. next day, before unlock, he went to the urinal, passed urine walked back to his place in the dormitory and lay down. The convict night watchman accompanied him to the urinal and back. He says the man made no complaint of illness, walked quite steady and did not appear to be at all...

One of the most dramatic and widely appreciated natural history insights of recent decades has been the recording of the songs of the male humpback whale. Humans have valued the complexity and haunting tones produced by one of the largest marine mammals. The songs have been thought to play a key role in the mating process in their winter feeding grounds, which, for the Atlantic population, occu...

The ECG showed normal sinus rhythm at 65 per min., with a very short P-R interval (0.10 sec.). On the fourth beat of the first lead set (simultaneous leads I, II, III), which is marked with an arrow, there is an atrial premature, contraction. This latter beat has a low, rather flat P wave preceding the QRS with a P-R interval of 0.20 sec. The contrast between the sinus beats (with short PR) and...