In continuation of our last, we herewith present two more designs of outbuildings, an Observatory and a Pump House.

The first represents an Observatory or look-out Tower, suitable for a situation on a high bluff, overlooking the ocean, or an extensive land prospect. This tower consists of two stories. The lower is ten feet high, and is surrounded by a gallery about eight feet wide, and guarded by a heavy balustrade. Inside the building are the stairs to the second floor: we here have a hexagonal chamber, surrounded on all sides by a covered balcony opening from it by means of casement windows.

A building like this should have a very strong frame, well put together, and should be tied to its foundation by means of iron rods, with elbows firmly wedged into the rock. This will enable it to stand perfectly secure in the strongest winds.

PUMP HOUSE.

The second is a design for a Pump House, built of rough twigs in the same manner as No. 1 in the Horticulturist for September. It is six feet square.