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5. Pinetum 
The collection of named and labeled conifers occupying 
the southwestern portion of the reservation surrounding 
conservatory range 1 has not been materially modified 
except by the replacement of certain plants which had been 
killed by unfavorable weather conditions; this included the 
bringing in of a few additional varieties. Space has been 
reserved in this area for such additional species and va- 
rieties of conifers as may prove to be hardy here. 
6. Viticetum 
The collection of vines and climbers brought together 
on the wooden arbor on the woodland border east of the 
economic garden has been maintained but not increased. 
It was found necessary to cut out a few trees contiguous to 
this arbor, and a few more should be removed. 
7. Water Gardens 
The collection of aquatics and other water-loving plants 
established in the two smaller lakes east of the museum 
building has been maintained without material modifica- 
tion, but it is susceptible of somewhat further development. 
The hardy water lilies here are a feature of great interest 
throughout the flowering season, as are also the native bog 
plants in the smaller of the two ponds. 
The collections of hardy and of tender water lilies in the 
concrete tanks of conservatory range I were very success- 
fully maintained and slightly increased. Difficulty was 
experienced in the tank given over to the tender species 
by the development of a leak or leaks, which we attempted 
to find and mend by a complete excavation of all the earth 
in the planting pockets, but the defect was not wholly 
remedied and another attempt to find the leaks will have 
to be made. 
8. Iris Garden 
The iris plantations established during 1916 at the ex- 
treme southwestern corner of the reservation developed 
