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"Figure 1 represents the embryo as it appears several days after the egg is deposited." — Goodrich. 1859

Embryo

"Figure 1 represents the embryo as it appears several days after the egg is deposited." — Goodrich.…

"Figure 2 gives an outline of its form; the arrows at the side of the head show the currents of water which are seen to flow to the branchiae by the breathing of the young animal." — Goodrich. 1859

Form of the embryo

"Figure 2 gives an outline of its form; the arrows at the side of the head show the currents of water…

Frogs are found all over the world, except Antarctica.

Frog

Frogs are found all over the world, except Antarctica.

Nearing the end of its development, a gradually shrinking tail is all that remains of the tadpole.

Frog with tail

Nearing the end of its development, a gradually shrinking tail is all that remains of the tadpole.

"The common frog of Europe, a common and well-known animal." — Goodrich. 1859

Common frog

"The common frog of Europe, a common and well-known animal." — Goodrich. 1859

"It is rather larger than the common frog, and its nocturnal croakings are so loud and disagreeable, that temporary dwellers in the neighborhood of ponds frequented by it, are often prevented from sleeping by its clamorous chorus. It is this species that is most approved of on the continent for culinary purposes." — Goodrich, 1859

Edible frog

"It is rather larger than the common frog, and its nocturnal croakings are so loud and disagreeable,…

A pollywog, another phase of tadpole development.

Pollywog

A pollywog, another phase of tadpole development.

A developing tadpole.

A developing tadpole

A developing tadpole.

A developing tadpole.

Developing tadpole

A developing tadpole.

A developing tadpole.

Developing tadpole

A developing tadpole.

A tadpole developing, with small rear legs beginning to form.

Developing tadpole

A tadpole developing, with small rear legs beginning to form.

A close up view of the head of a developing embryonic tadpole.

A developing tadpole's head

A close up view of the head of a developing embryonic tadpole.

"Figure 5 shows the form of the tadpole when first hatched, which usually takes place about four weeks after depositing the egg." — Goodrich. 1859

Newly hatched tadpole

"Figure 5 shows the form of the tadpole when first hatched, which usually takes place about four weeks…

"It is a harmless animal, though its ungainly appearance has made it the subject of general aversion." — Goodrich, 1859

Common European toad

"It is a harmless animal, though its ungainly appearance has made it the subject of general aversion."…

"Resembles the common toad of Europe in appearance: there are also other foreign species, among which is the accoucheur toad, which not only assists the female in excluding her eggs, but attaches them afterwards to his own hind-legs, where the young are developed until they arrive at the tadpole state, when he visists the water and the escape. This species is common in the vicinity of Paris." — Goodrich, 1859

Natter-jack toad

"Resembles the common toad of Europe in appearance: there are also other foreign species, among which…

"Is of a brownish or light ash-color, and is found under logs and the bark of decayed trees." — Goodrich, 1859

Squirrel Tree-toad

"Is of a brownish or light ash-color, and is found under logs and the bark of decayed trees." — Goodrich,…

"At the breeding season the back of the female exhbits a number of small pits; into these pits the male collects the eggs laid by the female in the edge of the water, and presses them down; they are then covered by a natural operculum, and there they are hatched, in the same manner as the free larvae of the other Batrachians." — Goodrich, 1859

Surinam toad

"At the breeding season the back of the female exhbits a number of small pits; into these pits the male…