Every system that has been invented has failed in presenting even a tolerably accurate view of the discrepancies and accordances of the endlessly-diversified forms that have resulted from the creation of an Infinite Power. The following table presents the Linnaean arrangement of Birds in outline:-- _Order I._ ACCIPITRES. 41. _Vultur_, vultures. Beak hooked; head bare: 8 species. 42. _Falco_, eagles and hawks. Beak hooked; head feathered: 32 species. 43. _Strix_, owl. Beak hooked, feathers at its base directed forwards: 12 species. 44. _Lanius_, shrike. Beak straightish, notched: 26 species. _Order II._ PICAE. 45. _Psittacus_, parrots. Beak hooked; upper mandible furnished with a cere: 47 species. 46. _Ramphastos_, toucan. Beak very large, hollow, convex, serrated; both mandibles incurved at the tip: 8 species. 47. _Buceros_, hornbill. Beak convex, curved, cultrate, large, serrated; forehead covered with a horny plate: 4 species. 46. _Buphaga_, beef-eater. Beak straight, somewhat quadrangular; the mandibles bulging: 1 species. 49. _Crotophaga_, plantain-eater. Beak compressed, half-eggshaped, arched, keeled on the back: 2 species. 50. _Corvus_, crows. Beak convex, cultrate; nostrils covered by recumbent bristly feathers: 19 species. 51. _Coracias_, roller. Beak cultrate, the tip incurved, not covered with feathers at the base: 6 species. 52. _Oriolus_, oriole. Beak conical, convex, straight, very acute; upper mandible slightly longer, and indistinctly notched: 20 species. 53. _Gracula_, grakle. Beak cultrate, convex, bareish at the base: 8 species. 54. _Paradisea_, birds of Paradise. Beak covered with the downy feathers of the forehead; feathers of the sides long: 3 species. 55. _Trogon_, curucui. Beak shorter than the head, cultrate, hooked, serrated: 3 species. 56. _Bucco_, barbet. Beak cultrate, laterally compressed, notched at the tip, incurved, opening to beneath the eyes: 1 species. 57. _Cuculus_, cuckoo. Beak roundish; nostrils with a prominent margin: 22 species. 58. _Yunx_, wryneck. Beak roundish, sharp pointed; nostrils concave: 1 species. 59. _Picus_, woodpecker. Beak angular, straight, the tip wedgeshaped; the nostrils covered with recumbent bristly feathers: 21 species. 60. _Sitta_, nuthatch. Beak awlshaped, roundish, straight: 3 species. 61. _Todus_, tody. Beak awlshaped, a little flattened, obtuse, straight, with spreading bristles at the base: 2 species. 62. _Alcedo_, kingsfisher. Beak three cornered, thick, straight, long: 15 species. 63. _Merops_, bee-eater. Beak curved, compressed, keeled: 7 species. 64. _Upupa_, hoopoe. Beak arcuate, convex, a little compressed, rather obtuse: 3 species.