TABLE I.- WARD IV. Streets, Number of Houses and Cases of Tuberculosis, and Cases per House, 1894–97. In a total number of 603 dwellings, with a population of 18,323, or 27.6 persons per house, 248 houses, or 37.3 per cent., were infected with tuberculosis. In the 248 houses there were 541 cases in three years (2.18 cases per house), 173 cases in 1894, 161 cases in 1895, and 207 cases in 1896-97. The average number of cases to the house for the whole ward (663 houses) was 0.81. The cases given in these tables include deaths as well as reported living cases of tuberculosis. The list, however, is not complete, as there was no compulsory return of cases, and only a small proportion, doubtless, of the actual number were returned. The increase in the number of cases in 1896 is probably only apparent, as the returns were more promptly made during this than the two previous years. But it is evident that in the three years-1894 to 1896, inclusive-only a small proportion of the houses, viz., 37.3 per cent. of the total number in the ward, were infected. It is also seen that some streets have a greater number of infected houses and cases than others, and that this remains so year after year. Table II., Ward IV., gives the streets, house numbers and houses in which three or more cases of tuberculosis have been reported in one or more years during the last three years. The following is a summary of this table: Number of streets in which cases occurred,. Number of houses in which three or more cases occurred... Number of cases in 1894. Number of cases in 1895... Number of cases in 1896.. 17 70 88 95 119 Total cases in these houses in three years. Average number of cases per house.. 302 4.3 Comparing these figures with those obtained for the whole ward, Cases occurring in 28.2 per cent. of the houses infected.... 302 Percentage of cases in same.. 55.8 Total number of inhabited houses. 663 Number of houses in which 55.8 per cent. of cases occurred... Percentage on total houses. 70 10.5 It is seen, therefore, that of the infected houses 28.2 per cent. contained 55.8 per cent. of the cases, and these occurred in only 10.2 per cent. of all the houses in the ward. Many of these houses, as will be seen by referring to the table (II.) have had one or more cases every year for three consecutive years, some of them having had as many as eight to eleven cases during this period. Several houses, in which one or more cases of tuberculosis have been reported in the last three years, have had deaths from the same disease in them for eight or nine years, viz., five houses, in which 22 cases have been reported since 1893, have had 36 deaths from tuberculosis from 1888 to 1893, inclusive. Such houses would seem to be permanently infected, as Dr. Tracy remarks (from whose report on tuberculosis in New York, published in the "City Record," January 11, 1894, these figures are taken), and should be thoroughly renovated from top to bottom, or better, condemned and torn down. They are old houses, in bad sanitary condition, some of them rear tenements, and densely packed with the poorest and filthiest class of people, some of them being used as cheap lodging houses. $ The distribution of tuberculosis in these districts is, perhaps, better shown graphically. The accompanying maps are facsimiles of those in the office of the Health Department, upon which all cases of tuberculosis have been recorded since 1894. From an examination of these maps it will be seen that tuberculosis is not uniformly distributed, even in Ward IV., which contains more. cases of tuberculosis than any in the city. The bulk of the cases is confined to narrow limits in certain streets and houses. It is also seen, by noting the symbols for each year, that one case is apt to follow another in the same house within a year or two. Often all the houses in a block contain cases, but again, one or more houses in an infected area seemed to have escaped infection. TABLE II-WARD IV. Streets and houses in which three or more cases of Tuberculosis occurred in 1894–1897. Description of houses and number of occupants. In a total of 248 infected houses (see Table I.) there occurred 302 cases in 70 houses, or 28.2 per cent.-88 cases in 1894, 95 in 1895 and 119 in 1896-1897. Of 541 cases in the ward, 302, or 55.8 per cent. occurred in 28 per cent. of the houses, and in 10.5 per cent. of all the houses in Ward IV. (663) there was an average number of 4.3 cases to the house in 28 per cent. of the infected houses. Some of the infected houses had as many as 8 and 11 cases in the three years. See Nos. 404 and 450 Pearl, No. 173 Chatham, Nos. 18 and 22 Cherry, No. 32 Oak and No. 5 Batavia streets. The following is a list of houses in which deaths from tuberculosis have occurred almost every year since 1888, taken from Dr. Tracy's report, January 11, 1894. The cases (including deaths) are also given which have been reported in the same houses since that time: Table III., Ward VI., shows the following for this ward: Number of streets in which cases of tuberculosis occurred... Number of houses in which cases of tuberculosis occurred... Number of cases in 1894...... Number of cases in 1895.. Number of cases in 1896-1897... Total number of cases in three years.. Average number of cases per house... 19 239 157 127 191 465 1.94 According to the last census there are 630 inhabited houses in Ward VI., with a population of 22,897, or an average number of |