17

Aug. 20^th

The Echnida & Hedgehog Tenrec both having spines, is the effect, partly of the same external conditions (ie. analogical structure) & partly the laws of organization (ie those laws which prevent infinite variation in every possible way. — the laws which determine the kinds of monstrosity, & determine the kind of variation & sporting in flowers & domestication of animals

19

Aug. 26^th —

When it is said that there is evidence in the organic world of infinite & growing complexity from a few types, it must not be supposed that this refers to time. — Marsupial in Oolite. — insects, of do orders — cheiroptera & cætacea in Eocene — dicot. plants in coal measures. — Shells in Cambrian & Crust show how long since present forms existed, but if it be asked how this complexity from a few types originated, we must go to the first origin of the world. — our present organic beings are the descendants, slightly a good deal modified & Many Forms lost; if of this old stock (which from action & reaction grew more complex) some perhaps rendered more complex & some simplified. —

22.

25

Annals of Natural History. no. XII. Vol. 2. p. 96 1 & p. 451. 1839 —

Translation of P. Fries most curious paper on the Pipe-fish — which he divides into two divisions, one of which are marsupial & the other have young which undergo metamorphosis & are provided with fins, & hence do not require sac. — but the male in these hatch young — are there not some. Marsup. Mammalia, which do have not sack, — Most curious facts & this paper deserves fresh study & whole order of the fish. —

Embryology

26

p. 97. for Man Chapt see Yarrell Syngnathus