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. Asa Gray animaldefinitiondifferentiate share on social
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. Asa Gray familiarformlive Change image and share on social
Why is it not just as likely that there were as many small general nearly at first as now, and as great a disproportion in the number of their species? Asa Gray disproportiongeneralgreat Change image and share on social
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. Asa Gray animalapproachbelieve share on social
Many years ago it was taught that plants and animals were composed of different materials: plants, of a chemical substance of three elements,- carbon, hydrogen, and oxygen; animals of one of four elements, nitrogen being added to the other three. Asa Gray addagoanimal share on social
Your candor is worth everything to your cause. It is refreshing to find a person with a new theory who frankly confesses that he finds difficulties, insurmountable, at least for the present. Asa Gray candorconfessdifficulty Change image and share on social
We have spoken of beings so low in the scale that the individuals throughout their whole existence are not sufficiently specialized to be distinctively plant or animal: yet these are definite life in simpler shape. Asa Gray animalbeingdefinite share on social
I am sufficiently convinced already that the members of a profession know their own calling better than anyone else can know it. Asa Gray callconvincemember Change image and share on social
In short, the animal and vegetable lines, diverging widely above, join below in a loop. Asa Gray animaldivergejoin Change image and share on social
Is it philosophical, is it quite allowable, to assume without evidence from fossil plants that the family or any of the genera was once larger and wide spread? and occupied a continuous area? Asa Gray allowableareaassume Change image and share on social
