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98 larger ones; they were also covered with pyramidal roofs, and were not built till after the completion of the house. Galleries around the towers gave the means of observing with small instruments in the open air, and on the east and west side of each gallery there was a large globe to serve as a support for a sextant. When not in use these globes were protected by pointed covers, of which the two eastern ones are visible on the figure. This also shows the foundation-stone in the south-east corner, and next to it a door leading down to the basement.

The south-east room on the ground-floor was the sitting-room of the family in winter; later on it was enlarged by pulling down the wall between it and the passage west of