44 THE AMERICAN MUSEUM JOURNAL 
The blow-gun in the hands of an Indian is a very effective weapon, 
and a skilled marksman will kill a small bird at thirty or forty paces. 
It is particularly deadly when used against birds or monkeys in the tops 
of trees, as in shooting in a direction nearly vertical the hunter can take 
the surest aim. ‘The poison acts very quickly, seldom requiring more 
than two minutes to do its work, but the length of time depends much 
on the size of the game and the condition of the poison used. 
In the Museum’s recently acquired collection from the Indians of 
the Upper Rio Caiary-Uaupés region are several of these blow-guns 
and many of the arrows used with them. 
C. W. Mrap. 
EXHIBITION SHOWING THE CONGESTION OF POPULATION IN 
NEW YORK CITY. 
For two weeks, beginning Monday, March 9, there will be held at 
the Museum an exhibition showing the congestion of population in 
New York City and illustrating graphically the means proposed and 
being taken for the amelioration of conditions among the poor of the 
city. Maps will be used to indicate, among other facts, the location 
of tenements erected within the last few years, all the existing transporta- 
tion lines, the comparative density of population in the different boroughs 
of the city and in New York in relation to other cities, the location of 
unoccupied farms in the State and of men and families who have been 
placed on farms during the past year, the location of “sweated” indus- 
tries in the lowest part of the city, the number of factories and workers 
per acre and the distribution of child labor. 
Models constructed according to scale will be exhibited to show the 
old-law and new-law tenements, the increase in the height of buildings 
in the last twenty-one years, an open-space tenement containing play- 
ground and park but covering only half the site of the building, normal 
school rooms and crowded school-rooms, and a series of dark and light 
rooms, apartments in a typical down-town tenement and apartments 
illustrating the work of the Practical Housekeeping Centers Association. 
In connection with the first week of the exhibition several confer- 
ences will be held beginning Monday evening, March 9, under the 
presidency of President John H. Finley with addresses by Governor 
