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sity of forcing boilers to their full capacity for long periods 
of time deteriorated boiler tubes and furnaces to a marked 
degree. The repairs were all made, and the buildings are 
now in good condition. Details are recorded in the report 
of the Superintendent of Buildings and Grounds. 
The two additional greenhouses at conservatory range 2 
under construction, through the generosity of Messrs. 
Daniel Guggenheim and Murry Guggenheim, will pre- 
sumably be completed and made ready for operation in 
the spring, and they will provide long needed space for the 
exhibition of tropical and subtropical plants. The larger 
of these two structures, designated the Central Display 
Greenhouse, has been designed, at the suggestion of Presi- 
dent Thompson, to include an open space which may be 
utilized as a lecture hall, and the facilities thus provided 
will doubtless prove a very important pedagogic addition 
to our equipment. This large greenhouse may also serve 
for more or less permanent horticultural exhibition, the 
need for which has always been realized in the city. 
The construction of the additional coal bunker at power 
house 2 provides important additional storage for coal. 
It is hoped that we shall succeed in enlarging the coal 
storage capacity at power house 1 during the coming season, 
as already planned and authorized. Increased coal storage 
capacity will operate economically in reducing the expense 
of handling coal, and also operate to obtain coal at some- 
what lower prices. In order to ensure a coal supply for 
the present winter, an amount estimated as suffcient to 
last until April was purchased, after consultation with the 
Commissioner of Parks, and delivered at power house 1 
during the summer and autumn. It was purchased from 
Olin J. Stephens, payment to be made for the amount 
consumed in 1918 from appropriations for that year, and 
the remainder from appropriation for 1919. 
Liberty Bonds 
As authorized by the Board of Managers, employees of 
the Garden were given the privilege of subscribing to both 
