CYTOPLASM CYTOPLASM is neither a true liquid nor a true solid, but has an interesting combination of characters which place it between the two states. It may contain as much as 97 per cent water, and ...

From a consideration of the methods heretofore used in the study of permeability it would appear that the steps most essential to further progress toward the solution of the problem are: (1) a ...

This article was supported by readers like you. Our mission is to provide accurate, engaging news of science to the public. That mission has never been more important than it is today. As a nonprofit ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

This is a preview. Log in through your library . Abstract Examination of Miocene angiosperm leaf compressions from the Clarkia and Succor Creek localities of Idaho and Oregon reveals a characteristic ...