Professor Ebermeier of Munich, Germany says: "When the leaves take carbonic acid from the air they break it up and force its carbon into new chemical compounds which are then stored away as new material in the tree. The forest is the most highly organized portion of the vegetable kingdom." No man can really know the forest without feeling the gentle influence of one of the kindest and strongest parts of nature. It is the most helpful friend of man.
Proceedings of the Iowa Academy of Science
©1916 Iowa Academy of Science, Inc.
"How a Tree Grows,"
Proceedings of the Iowa Academy of Science, 23(1), 315-316.
Available at: https://scholarworks.uni.edu/pias/vol23/iss1/51