population of tenement districts, please take note. With the first hot nights in June police despatches, that record the killing of men and women by rolling off roofs and window-sills while asleep, announce that the time of greatest suffering among the poor is at hand. It is in hot weather, when life indoors is well-nigh unbearable with cooking, sleeping, and working, all crowded into the small rooms together, that the tenement expands, reckless of all restraint. Then a strange and picturesque life moves upon the flat roofs. In the day and early evening mothers air their babies there, the boys fly their kites from the house-tops, undismayed by police regulations, and the young men and girls court and pass the growler. In the stifling July nights, when the big barracks are like fiery furnaces, their very walls giving out absorbed heat, men and women lie in restless, sweltering rows, panting for air and sleep. Then every truck in the street, every crowded fire-escape, becomes a bedroom, infinitely preferable to any the house affords. A cooling shower on such a night is hailed as a heaven-sent blessing in a hundred thousand homes. [Illustration] Life in the tenements in July and August spells death to an army of little ones whom the doctor's skill is powerless to save. When the white badge of mourning flutters from every second door, sleepless mothers walk the streets in the gray of the early dawn, trying to stir a cooling breeze to fan the brow of the sick baby. There is no sadder sight than this patient devotion striving against fearfully hopeless odds. Fifty "summer doctors," especially trained to this work, are then sent into the tenements by the Board of Health, with free advice and medicine for the poor. Devoted women follow in their track with care and nursing for the sick. Fresh-air excursions run daily out of New York on land and water; but despite all efforts the grave-diggers in Calvary work over-time, and little coffins are stacked mountains high on the deck of the Charity Commissioners' boat when it makes its semi-weekly trips to the city cemetery.