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. Cassell's natural history. Animals; Animal behavior. 204 ISATURAL HISTORY. instance, we found Cryptoiirocta to be intermediate between Cats and Civets, and yet, if we had followed the order indicated by this relationshij), we should have had to ignore the close connection between Cats and Hyasnas, and that between Hyoenas and Civets, through the intermediation of the Aard Wolf. It is necessary, then, to devise some method of vi-iting do^vn the names of the families, other than that of j)lacing them one under the other, if we are to get anything like a clear notion of then- mutual relationsh

. Cassell's natural history. Animals; Animal behavior. 204 ISATURAL HISTORY. instance, we found Cryptoiirocta to be intermediate between Cats and Civets, and yet, if we had followed the order indicated by this relationshij), we should have had to ignore the close connection between Cats and Hyasnas, and that between Hyoenas and Civets, through the intermediation of the Aard Wolf. It is necessary, then, to devise some method of vi-iting do^vn the names of the families, other than that of j)lacing them one under the other, if we are to get anything like a clear notion of then- mutual relationsh Stock Photo
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. Cassell's natural history. Animals; Animal behavior. 204 ISATURAL HISTORY. instance, we found Cryptoiirocta to be intermediate between Cats and Civets, and yet, if we had followed the order indicated by this relationshij), we should have had to ignore the close connection between Cats and Hyasnas, and that between Hyoenas and Civets, through the intermediation of the Aard Wolf. It is necessary, then, to devise some method of vi-iting do^vn the names of the families, other than that of j)lacing them one under the other, if we are to get anything like a clear notion of then- mutual relationships. The method adopted by Professor Flower is perhaps the most convenient, antl following liim, we arrange the groups thus :— FeLID.K. HY.BNID.Ti. tiliSID.B. CuYPTOPKOCTiD.i:. Protelid.e. Caniu.t;. Pkocvoxid.i;. Ailvuiu.t;. VlVERRID.E. MuSTELID.Ti. In this scheme we see an expression of the fact that the Dogs (Canidtt) form a central group, from which the families of the ^luroidea—those to the left—divei-ge in one direction, and the families of the Arctoidea—those to the right—in the other direction. The Civets (Viverridce) and the Weasel family (Mustelidm), being the least modified of the ^luroid and Arctoid sections respectively, are placed at the bottom of the table, the Cats (Felidce) and Bears (Crsida:), being the most modified, are placed at the top. The two latter families, again, are placed at opposite extremities of the table, as far from one another as possible, to indicate the great gap which separates the digitigrade, short-skulled, active, carnivorous Cats, from the plantigrade, long-skulled, clumsy, herbivorous Bears. To be quite accurate, such a scheme should take account not merely of families, but of genera : in our table, for instance, there is nothing to show the immense amount of specialisation undergone by one section of the Mtistelidce—the Otters—to fit them for aquatic life ; but such A, detailed arrangement is quite beyond the scope of the

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