This patient has had a history of l eprosy since I9I7 and illustrates the usual , experience in such cases of having been "'Bacteriologic index. To estimate the bacteriologic index add up the total numuer of positive smears and divide by sixteen. The bacteriologic index will thus vary from 6.uo to 0, the former being from a case where all smears are 6 plus and the latter from the case which shows no bacilli in any of the smears taken. (e.g. If the plus values of all the sixteen smears added up gives a total of 64, then the bacteriologic index would be 6 4-:-16 T 4.) The index in this paper is taken to the nearest digit. Decimal places are considered of little value except when the index falls beloll' 0. .5 when thE' f'igure is indicated by 0.5- .

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