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essing the most penetrating odor and used in therapeutics； is obtained from the preputial follicles of the musk…deer of Thibet； and castor； a substance less penetrating； is obtained from the preputial sacs of the beaver。 Virgin moths （Bombyx） carried in boxes in the pockets of entomologists will on wide commons cause the appearance of males of the same species。
Bulimia is excessive morbid hunger； also called canine appetite。 While sometimes present in healthy people； it is most often seen in idiots and the insane； and is a symptom of diabetes mellitus。 Mortimer mentions a boy of twelve who； while laboring under this affliction； in six days devoured food to the extent of 384 pounds and two ounces。 He constantly vomited； but his craving for food was so insatiable that if not satisfied he would devour the flesh off his own bones。 Martyn； Professor of Botany at Cambridge in the early part of the last century； tells of a boy ten years old whose appetite was enormous。 He consumed in one week 373 pounds of food and drink。 His urine and stools were voided in normal quantities； the excess being vomited。 A pig was fed on what he vomited； and was sold in the market。 The boy continued in this condition for a year； and at last reports was fast failing。 Burroughs mentions a laborer at Stanton； near Bury； who ate an ordinary leg of veal at a meal； and fed at this extravagant rate for many days together。 He would eat thistles and other similar herbs greedily。 At times he would void worms as large as the shank of a clay…pipe； and then for a short period the bulimia would disappear。
Johnston mentions a case of bulimia in a man who devoured large quantities of raw flesh。 There is an instance on record of a case of canine appetite in which nearly 400 pounds of solid and fluid elements were taken into the body in six days and again ejected。 A recovery was effected by giving very concentrated food； frequently repeated in small quantities。 Mason mentions a woman in St。 Bartholomew's Hospital in London in the early part of this century who was wretched unless she was always eating。 Each day she consumed three quartern…loaves； three pounds of beef…steak； in addition to large quantities of vegetables； meal； etc。； and water。 Smith describes a boy of fourteen who ate continuously fifteen hours out of the twenty…four； and who had eight bowel movements each day。 One year previous his weight was 105 pounds； but when last seen he weighed 284 pounds and was increasing a half pound daily。 Despite his continuous eating； this boy constantly complained of hunger。
Polydipsia is an abnormal thirst； it may be seen in persons otherwise normal； or it may be associated with diseasessuch as diabetes mellitus or diabetes insipidus。 Mackenzie quotes a case from Trousseau； in which an individual afflicted with diabetes insipidus passed 32 liters of urine daily and drank enormous quantities of water。 This patient subjected himself to severe regimen for eight months；although one day； in his agonies； he seized the chamber…pot and drank its contents at once。 Mackenzie also mentions an infant of three who had polydipsia from birth and drank daily nearly two pailfuls of water。 At the age of twenty…two she married a cobbler； unaware of her propensity； who found that his earnings did not suffice to keep her in water alone； and he was compelled to melt ice and snow for her。 She drank four pailfuls a day； the price being 12 sous； water in the community was scarce and had to be bought。 This woman bore 11 children。 At the age of forty she appeared before a scientific commission and drank in their presence 14 quarts of water in ten hours and passed ten quarts of almost colorless urine。 Dickinson mentions that he has had patients in his own practice who drank their own urine。 Mackenzie also quotes Trousseau's history of a man who drank a liter of strong French brandy in two hours； and habitually drank the same quantity daily。 He stated that he was free from the effects of alcohol； on several occasions on a wager he took 20 liters of wine； gaining his wager without visibly affecting his nervous system。
There is an instance of a man of fifty…eight who could not live through the night without a pail of water； although his health was otherwise good。 Atkinson in 1856 reported a young man who in childhood was a dirt…eater； though at that time complaining of nothing but excessive thirst。 He was active； industrious； enjoyed good health； and was not addicted to alcoholics。 His daily ration of water was from eight to twelve gallons。 He always placed a tub of water by his bed at night； but this sometimes proved insufficient。 He had frequently driven hogs from mudholes to slake his thirst with the water。 He married in 1829 and moved into Western Tennessee； and in 1854 he was still drinking the accustomed amount； and at this time he had grown…up children。 Ware mentions a young man of twenty who drank six gallons of water daily。 He was tormented with thirst； and if he abstained he became weak； sick； and dizzy。 Throughout a long life he continued his habit； sometimes drinking a gallon at one draught； he never used spirits。 There are three cases of polydipsia reported from London in 1792。
Field describes a boy with bilious remittent fever who would drink until his stomach was completely distended and then call for more。 Emesis was followed by cries for more water。 Becoming frantic； he would jump from his bed and struggle for the water bucket； failing in this； he ran to the kitchen and drank soapsuds； dish…water； and any other liquid he could find。 He had swallowed a mass of mackerel which he had not properly masticated； a fact proved later by ejection of the whole mass。 There is a case on record a in which there was intolerable thirst after retiring； lasting for a year。 There was apparently no polydipsia during the daytime。
The amount of water drunk by glass…blowers in a day is almost incredible。 McElroy has made observations in the glass…factories in his neighborhood； and estimates that in the nine working hours of each day a glass…blower drinks from 50 to 60 pints of water。 In addition to this many are addicted to the use of beer and spirits after working hours and at lunch…time。 The excreta and urine never seem to be perceptibly increased。 When not working these men do not drink more than three or four pints of water。 Occasionally a man becomes what is termed 〃blown…up with water；〃 that is； the perspiration ceases； the man becomes utterly helpless； has to be carried out； and is disabled until the sweating process is restored by vigorously applied friction。 There is little deleterious change noticed in these men； in fact； they are rarely invalids。
Hydroadipsia is a lack of thirst or absence of the normal desire for water。 In some of these cases there is a central lesion which accounts for the symptoms。 McElroy； among other cases； speaks of one in a patient who was continually dull and listless； eating little； and complaining of much pain after the least food。 This； too； will be mentioned under abstinence。
Perverted appetites are of great variety and present many interesting as well as disgusting examples of anomalies。 In some cases the tastes of people differ so that an article c