“But your servants, ma’am,” he argued, as Nell took away his hat and cane. “I’m afraid I give them a lot of trouble, and they’ll be springing a mutiny on you.”

“I don’t know what poor Sarah’ll do, sure; you’ve taised her so!” replied Mrs Gilmour jokingly. “But, Molly the cook’s your friend, I know. She says you’re the only one in the house that properly appreciates her curries.”

“Faith and she turns them out well, ma’am; and you can tell her so, with my compliments,” said the old sailor with much heartiness as he winked to Nellie. “As for ‘that good Sarah,’ ma’am, I shall have to make my peace with her by and by, with your permission.”

After breakfast, the Captain and Nellie, with the assistance of Bob and Dick, even “the good Sarah,” too, being pressed into the service, set about preparing the sea-anemones and other specimens they had collected the previous day for their new home in the aquarium which Mrs Gilmour had bought for the purpose shortly before.

This aquarium was in appearance somewhat like an inverted dish-cover of glass—one of the best shapes to be had. This sort being free from those leaky joints that are the invariable accompaniment of all-square cisterns; while globular ones have not got sufficient space at the bottom for rock-work, or those little hiding-places that delight the hearts of the denizens of the deep when they are free agents and in their own waters.

Presently, under the active superintendence of the old sailor, the whilom empty glass receptacle began to assume a more picturesque aspect.

To commence with, a groundwork was constructed of fine white sand and shells, each of the latter being washed in repeated baths of clear and fresh sea-water, which had been brought up from the beach in the morning, before being introduced into the aquarium; where, if success be desired, cleanliness is as essential to the well-being of its little tenants as it is deemed to be amongst human beings.

The Captain said something to this effect while making Nellie wash the different shells, which he then arranged along the sandy bottom, which was made to slope from the back of the structure down to the centre, forming a sort of hollow there; and then rising again in front.

“So far, so good,” said the Captain, placing some bits of rock in the background, which, leaning against each other, formed so many small caverns. “These will do for those crabs, which Master Bob insists on having, to retreat to when some of the other fry pay them too much attention.”

On the right and left of the aquarium the old sailor dexterously built up larger pieces of rock-work, intermixed with bits of red seaweed that grows in the form of a feathery plume, called by naturalists the “bryopsis plumosa,” than which no more graceful marine plant can be found.