germ-layer

He used the germ-layer theory to prove the essential unity of type of all the Triploblastica.

Form and Function A Contribution to the History of Animal Morphology

The great importance of the Gastræa theory lay in the fact that it linked up, by means of the biogenetic law, the germ-layer theory with the doctrine of evolution.

Form and Function A Contribution to the History of Animal Morphology

Remak's greatest service was that he put the germ-layer theory in direct relation with the cell-theory by demonstrating the cellular continuity from egg-cell to tissue, and by showing that each germ-layer possessed distinctive histological characteristics.

Form and Function A Contribution to the History of Animal Morphology

Somewhat similar views as to the importance of the germ-layer theory for the phylogenetic classification of animals were published by Sir E. Ray

Form and Function A Contribution to the History of Animal Morphology

Even before the publication of von Baer's book he had interpreted in terms of the germ-layer theory sketched by his friend Pander the splitting of the blastoderm which occurs in the early development of

Form and Function A Contribution to the History of Animal Morphology

Though Remak's germ-layer theory had thus principally a histological orientation, it laid down the main lines of the modern morphological treatment of the germ-layers.

Form and Function A Contribution to the History of Animal Morphology

The honour of being the founder of the germ-layer theory is sometimes attributed to C.F. Wolff, notably by Kölliker and O. Hertwig.

Form and Function A Contribution to the History of Animal Morphology

Remak is the second great name in the history of the germ-layer theory.

Form and Function A Contribution to the History of Animal Morphology

Baer did not attach any special morphological significance to the peritoneal lining of the body cavity, as is done in more modern forms of the germ-layer theory.

Form and Function A Contribution to the History of Animal Morphology

All these parts are connected directly or indirectly with sensation, and the upper germ-layer may accordingly be called the _sensory_ layer.

Form and Function A Contribution to the History of Animal Morphology