The Bookshelf for boys and girls: Nature and Outdoor Life (1912)
University Society, New York · New York. : University Society · leaf 84
rganism, but, in some respects,such is a fact. Of course, leaves do not breathemuscularly as animals do, but the diffusion ofthe air through their structure in a way suggestsanimal breathing. In the surfaces of leaves thereare many tiny holes with well-balanced valvesthat are extremely sensitive to… … These two illustrations show the cellular structure of the edge ofleaves when cut through. The upper one is deadly nightshade, aclose cousin to the potato and egg-plant. The lower one is a section ofa pine needle. The little white slits around the edge are the breathing-pores. The circular white…
Children's literature · Children's encyclopedias and dictionaries · Literature · Encyclopedias and dictionaries
Internet Archive · BYU–Idaho · Public Domain Mark 1.0. Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial351dodg-691-981.webp)
