. Journal of experimental zoology. I 2. The Journal of , Zoology, Vol. m. No. t^. CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THEMUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE,E. L. MARK, Director.—No. i8o. •359 LIGHT REACTIONS IN LOWER ORGANISMSI. STENTOR CCERULEUS BY S. O. MAST Professor of Biological Science at Hope College, Holland, Mich., U. S. Six Figures 1. Introduction 2. Material and apparatus -360 3. Observations -766 A. Moving Stentors ^66 a. In light uniform in intensity 366 b. In light graded in intensity 371 B. Attached Stentors 377 C. Threshold for ligh
. Journal of experimental zoology. I 2. The Journal of , Zoology, Vol. m. No. t^. CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THEMUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE,E. L. MARK, Director.—No. i8o. •359 LIGHT REACTIONS IN LOWER ORGANISMSI. STENTOR CCERULEUS BY S. O. MAST Professor of Biological Science at Hope College, Holland, Mich., U. S. Six Figures 1. Introduction 2. Material and apparatus -360 3. Observations -766 A. Moving Stentors ^66 a. In light uniform in intensity 366 b. In light graded in intensity 371 B. Attached Stentors 377 C. Threshold for light stimuli 381 a. With the animals side illuminated 381 First method 382 Second method 383 Third method 384 b. With the animals anterior end illuminated 384 4. Summary 302 5. Bibliography 303 6. Appendix 3^4 I. INTRODUCTION The light reactions of Stentor coeruleus have been describedin detail by Jennings (04a, p. 29) in a paper, entitled Re-actions to Light in Ciliates and Flagellates. His work showsconclusively that such reactions
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
