It is as natural for children to look intently for the Stomata of a plant after they have become interested in its function of breathing, as it is repulsive to attend minutely to them when they are considered as isolated peculiarities of structure.
"How We Think"
John Dewey
Although this peculiarity of the structure of Stomata is also found in plants of widely distant orders, it is, on the whole, but rarely met with, and being thus observed to characterise a foliage previously suspected to be proteaceous, it adds to the probability that the botanical evidence had been correctly interpreted.
"The Student's Elements of Geology"
Sir Charles Lyell
Either side may fall uppermost; and then of the developing shoot, the side exposed to the light "is under all circumstances the upper side which forms Stomata, the dark side becomes the under side which produces root-hairs and leafy processes."
"Essays: Scientific, Political, & Speculative, Vol. I"
Herbert Spencer