Camphor, 67 use of, in asphyxia, 100 use of, in fevers, 105 use of, in the insomnia of cachexia, 108 use of, after parturition, 109 Cannabin, 69 Cannabin tannate, 68 Cannabis indica, 68 anti-aphrodisiac effect of, 69 use of, in delirium tremens, 98 use of, in fever, 104 use of, in insanity, 96, 97 use of, in pregnancy, 109 use of, as a substitute for hyoscyamus, 113 Cantharides, 63 Capsicum, 63 Capsicum, use of, in the insomnia of delirium tremens, 77, 98 Carbolic acid, vapor of, for relief of cough, 100 Carbon, oxidation of, during sleep, 7 Carbonic acid gas, discharge of, during sleep, 9 Cardiac debility, use of butylchloral in, 83 Cardiac disease, insomnia of, treated with paraldehyde, 80 treated with digitalis, 66 Cardiac dyspnœa, relieved with opiates, 87, 98 Cardiac neuralgia, 99 Carotid arteries, compression of, for relief of insomnia, 25, 27, 57 Cataleptic form of artificial somnambulism, 219 Catarrh, nasal, effect of sleep upon, 8 Caton, Judge John D., on the difficulty of sleep during the continuous daylight of summer in Norway, 40 Cerebral activity, effect of, upon bodily temperature, 8 Cerebral anæmia and its cause during sleep, 25, 28 use of phosphorus for, 71 Cerebral circulation, dependence of consciousness upon, 25, 27 during sleep, observations upon, by Professor Mosso, 26 Cerebral exhaustion, benefited by the use of phosphorus, 71 in fever, 105 Cerebral hyperæmia, effects of, 145 insomnia of, treatment with paraldehyde, 80 Cerebral irritation in cachectic states, 108 Cerebro-spinal meningitis, use of opiates in, 93 Cerebro-spinal weakness, 110 Change of life, use of valerian during, 68 Chicago, embarkation from, 45 the great fire in, 40 Child-birth, insomnia after, 81 Chloral, 82 Chloral hydrate, influence of, upon oxidation in the tissues, 9 association of, with morphia and bromides, 86 use of, in angina pectoris, 99 use of, in asthma, 101 use of, in cachexias with insomnia, 109 use of, in chorea, 110 use of, in chronic alcoholism, 97 use of, in delirium tremens, 98 use of, in fevers, 104 use of, in hepatic diseases, 102 use of, in insanity, 95 use of, in meningitis, 94 use of, in night terrors, 112 use of, in respiratory diseases, 100 Chlorodyne, 82 use of, in syphilitic neuralgia, 107 Chloroform, 81 use of, in asthma, 101 use of, in convulsions, 110 spirit of, in the treatment of fevers, 105 Chossat, observations of, on the temperature of pigeons, 7 Circulation of blood, its regulation by the nervous system, 26 disorders of, 52 modified by counter-irritation, 63 state of, during sleep, 6 Clairvoyance, hypothetical explanation of, 148 in dreams, 146, 148, 149 in dreaming, and in natural somnambulism, 226 in the hypnotic state, 224