One of the most careful accounts of death from the sting of the scorpion is that of Linnell, (1914), which relates to a comparatively small Malayan species, unfortunately undetermined. The patient, a coolie, aged twenty, was admitted to a hospital after having been stung two days previously on the left heel. For cure, the other coolies had made him eat the head of the scorpion. On admission, the patient complained of "things creeping all over the body". Temp. 102.8°. On the fourth day he had paralysis of the legs, and on the fifth day motor paralysis to the umbilicus, sensation being unaltered. On the sixth day there was retention of the urine and on the ninth day (first test after third day) sugar was present. On the thirteenth day the patient became comatose, but could be roused to eat and drink. The temperature on the following day fell below 95° and the patient was still comatose. Death fifteenth day. Examination of the spinal (lumbar) cord showed acute disseminated myelitis. In one part there was an acute destruction of the anterior horn and an infiltration of round cells. In another portion Clarke's column had been destroyed. The perivascular sheaths were crowded with small round cells and the meninges were congested. Some of the cells of the anterior horn were swollen and the nuclei eccentric; chromatolysis had occurred in many of them. As for treatment, Castellani and Chalmers (1910), recommend bathing the part well with a solution of ammonia (one in five, or one in ten). After bathing, apply a dressing of the same alkali or, if there is much swelling and redness, an ice-bag. If necessary, hypodermic injections of morphine may be given to relieve the pain. At a later period fomentations may be required to reduce the local inflammation. THE HEXAPODA OR TRUE INSECTS There are a number of HEXAPODA, or true insects, which are, in one way or another, poisonous to man. These belong primarily to the orders Hemiptera, or true bugs; Lepidoptera, or butterflies and moths (larval forms); Diptera, or flies; Coleoptera, or beetles; and Hymenoptera, or ants, bees, and wasps. There are various ways in which they may be poisonous. 1. _Piercing_ or _biting_ forms may inject an irritating or poisonous saliva into the wound caused by their mouth-parts. 2. _Stinging forms_ may inject a poison, from glands at the caudal end of the abdomen, into wounds produced by a specially modified ovipositer, the _sting_. 3. _Nettling_ properties may be possessed by the hairs of the insect. 4. _Vescicating_, or _poisonous blood plasma_, or _body fluids_ are known to exist in a large number of species and may, under exceptional circumstances, affect man. For convenience of discussion, we shall consider poisonous insects under these various headings. In this, as in the preceding discussion, no attempt will be made to give an exhaustive list of the poisonous forms. Typical instances will be selected and these will be chosen largely from North American species.