{226} Project Gutenberg note: the table in the book is very wide. Since it won’t fit within the normal Gutenberg margins, and cannot be reproduced typographically, the rows of the table have been broken out as follows.—DP. Table shows: scale of animal kingdom (the numbers indicate orders); order of animals in; ascending series of rocks; fœtal human brain resembles, in (The numbers indicate orders) Rocks: 1. Gneiss and Mica Slate system Fœtal: 1st month, that of an avertebrated animal; Scale: RADIATA (1, 2, 3, 4, 5) Order: Zoophyta, Polypiaria Rocks: 2. Clay Slate and Grawacke system Fœtal: 1st month, that of an avertebrated animal; Scale: MOLLUSCA (6, 7, 8, 9, 10, 11) Order: Conchifera, Double-shelled Mollusks Rocks: 3. Silurian system Fœtal: 1st month, that of an avertebrated animal; Scale: ARTICULATA _Annelida_ (12, 13, 14) Rocks: 3. Silurian system Fœtal: 1st month, that of an avertebrated animal; Scale: ARTICULATA _Crustacea_ (15, 16, 17, 18, 19, 20) Order: Crustacea, Annelida, Crustaceous Fishes Rocks: 3. Silurian system Fœtal: 1st month, that of an avertebrated animal; Scale: ARTICULATA _Arachnida & Insecta_ (21–31) Order: Crustaceous Fishes Rocks: 4. Old Red Sandstone Fœtal: 1st month, that of an avertebrated animal; Scale: VERTEBRATA _Pisces_ (32, 33, 34, 35, 36) Order: True Fishes Rocks: 5. Carboniferous formation Fœtal: 2nd month, that of a fish; Scale: VERTEBRATA _Reptilia_ (37, 38, 39, 40) Order: Piscine Saurians (ichthyosaurus, &c.), Pterodactyles, Crocodiles, Tortoises, Batrachians Rocks: 6. New Red Sandstone Fœtal: 3rd month, that of a turtle; Scale: VERTEBRATA _Aves_ (41, 42, 43, 44, 45, 46) Order: Birds Rocks: 6. New Red Sandstone Fœtal: 4th month, that of a bird; Scale: VERTEBRATA _Mammalia_: 47 Cetacea Order: (Bone of a marsupial animal) Rocks: 7. Oolite Scale: VERTEBRATA _Mammalia_: 48 Ruminantia Order: (Bone of a marsupial animal) Rocks: 8. Cretaceous formation Scale: VERTEBRATA _Mammalia_: 49 Pachydermata Order: Pachydermata (tapirs, horses, &c.) Rocks: 9. Lower Eocene Scale: VERTEBRATA _Mammalia_: 50 Edentata Order: Pachydermata (tapirs, horses, &c.) Rocks: 9. Lower Eocene Scale: VERTEBRATA _Mammalia_: 51 Rodentia Order: Rodentia (dormouse, squirrel, &c.) Rocks: 9. Lower Eocene Fœtal: 5th month, that of a rodent; Scale: VERTEBRATA _Mammalia_: 52 Marsupialia Order: Marsupialia (racoon, opossum, &c.) Rocks: 9. Lower Eocene Fœtal: 6th month, that of a ruminant; Scale: VERTEBRATA _Mammalia_: 53 Amphibia Order: Marsupialia (racoon, opossum, &c.) Rocks: 9. Lower Eocene Fœtal: 6th month, that of a ruminant; Scale: VERTEBRATA _Mammalia_: 54 Digitigrada Order: Digitigrada (genette, fox, wolf, &c.) Rocks: 10. Miocene Fœtal: 7th month, that of a digitigrade animal; Scale: VERTEBRATA _Mammalia_: 55 Plantigrada Order: Plantigrada (bear) Rocks: 10. Miocene Scale: VERTEBRATA _Mammalia_: 55 Plantigrada Order: Cetacea (lamantins, seals, whales) Rocks: 10. Miocene