. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. 592 THE CLIONA SULPHUREA. Class II.—Carneospongi^e. Most of the forms embraced here liave the skeleton frame- work made \\\) of horny or silicious spicules. Three orders embrace the Sponges of this class. The III. Order, Kebatoidea, includes the commercial Sjionges ; those having a horny framework. Sub-order—Spongince. The genus Spongia embrace all the Sponges that are utilized in commerce. Six species are at present recognized, with varieties. Three of the species are found in the Medit
. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. 592 THE CLIONA SULPHUREA. Class II.—Carneospongi^e. Most of the forms embraced here liave the skeleton frame- work made \\\) of horny or silicious spicules. Three orders embrace the Sponges of this class. The III. Order, Kebatoidea, includes the commercial Sjionges ; those having a horny framework. Sub-order—Spongince. The genus Spongia embrace all the Sponges that are utilized in commerce. Six species are at present recognized, with varieties. Three of the species are found in the Mediterranean and Red Sea, and three are native to Bahamas and the Florida Eeef. The Sponges of our coast are of the coarser kinds, yet of great practical value in the arts and household affairs. It is an interesting fact that parties in the American localities have succeeded in raising Sponges from cut- tings. This is done, of course, binder the sea surface, as the moment the Sponge is re- moved from water it dies. The broad areas of lagoon on the Florida Reef will furnish l)rofitable returns of this new product. The well known " Dead Man's Finger*' {CJialinula ocvlata), found frequently after storms on our beaches along the Atlantic coast, is of another order, called Keroto-silicoidea, on ac- count of the union of the two kinds of spicules. One of the sub-orders of this gi'oup embraces the spe- cies Mkrociona jjrollfera, abundant on pools at Cape Cod. Its color is a bright orange, and in tliis fonn. fresh from the sea, it will be remembered by many a visitor to the sea-shore after heavy gales. Another sub-order embraces the familiar Crumb-of-Bread Sponge {HalLcliondria panicea). Another, Suberites compacta, is common on the south side of Cape Cod. Some boring forms, small, but very destructive to shell-fish, are common on our shores. Glloiia sulpliurea is one notable species. No satisfactory explanation is yet forthcoming of its boring character. Another sub-order embrace
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