“It was always understood that plants and animals, though completely contrasted in their higher representatives, approached each other very closely in their lower and simpler forms. But they were believed not to blend.” FormAnimalHigherUnderstoodPlantRepresentativesTaxiPlants And Animals Author:Asa Gray
“The best opinion now is, that there are multitudinous forms which are not sufficiently differentiated to be distinctively either plant or animal, while, as respects ordinary plants and animals, the difficulty of laying down a definition has become far greater than ever before.” FormAnimalOpinionGreaterOrdinaryDifficultyPlantDefinitionsPlants And AnimalsLaying Down Book:Natural Science and Religion Source: Natural Science and Religion
“This substance, which is manifold in its forms and protean in its transformations, has, in its state of living matter, one physiological name which has become familiar, that of protoplasm.” MatterStatesFormNamesTransformationFamiliarSubstancePhysiologicalManifold Book:Natural Science and Religion Source: Natural Science and Religion