Mast, Samuel Ottmar, 1871- · New York, J. Wiley · leaf 144
pida that little can be seen through it, while in someother species studied it is actually black, so that nothing OBSERVATIONS ON UNICELLULAR FORMS 129 can be seen of the structure Inside. The tests can howeverbe readily removed. If the cover-glass is allowed to presslightly on the organism it… … Fig. 16. I. Trachelomonas hispida showing structure; cv, contractile vacuole;t, dark brown test nearly opaque; s, spines on surface; n, nucleus; ch, chloroplast;e, eye-spot. II. Different view of same specimen showing that the eye-spot is nearly cen-trally located. Note rough edges of eye-spot and…
Light -- Physiological effect · Phototropism
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