The preparatory work, having in view the proper re-arrangement of the hardy plants in the Garden, has been continued during the year. The permanent labelling of all plants, as soon as determined, has been pushed forward as rapidly as possible, and is now, with the exception of the Grasses and some other Monocotyledonous orders as nearly completed as this difficult and constantly recurring operation can be.

The small north glass shed behind the small Orchid-house has been fitted with benches and heated, and will be devoted to the cultivation of Dionssa, Sarracenia, and other insectivorous plants, cool-house Ferns, etc.

The brick wall dividing Greenhouse No. 2 from the large potting-shed behind it has been removed; the wooden roof of the latter changed to a glass one, and the whole converted into a span-roofed cool-house, which will be devoted to the cultivation of Australian shrubs and other half-hardy plants.

The principal range of glass-houses has been, for several years, heated by two boilers, placed at the two extremities. The smaller of these has been discontinued; an arrangement which, it is hoped, will lead to a considerable economy in fuel, as it certainly will in labor.

This range of houses, though in excellent condition, is entirely inadequate to contain the various collections of exotic plants now cultivated in the Garden, and the plants are beginning to 6uffer for want of sufficient room. The magnificent Palm in the Central Compartment, probably the finest specimen in North America, must be cut down the coming year, if new accommodation is not provided for it.

The small greenhouse in the rear of the principal range is in miserable condition, and the collection of Succulent plants grown in it has already suffered for want of proper accommodation. This house is so old that it does not seem expedient to make any great outlay on it.

For want of sufficient room and proper accommodation for its operations, the propagating department of the Garden has been transferred from Cambridge to the greenhouses of the Bussey Institution, now temporarily devoted to the uses of the Arnold Arboretum.

Materials for the botanical classes during the winter, which were formerly raised at the Garden, are now either raised at the Bussey Institution or purchased. This arrangement is cheaper than the former method, and it also admits of the cultivation at the Garden of plants of scientific interest in the space which must otherwise have been devoted to a great number of individuals of a few common species.