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Contents — continued from page 1 
PAGE 
XVII. — The Photometry of a Bull’s-Eye Lens for Illu- 
minating Microscopic Objects. By Conrad Beck, 
C.B.E., F.R.M.S. (Five Text-Figures) 389 
XVIII. — The Illumination of Microscope Objects : Glare 
and Flooding with Transmitted Light. By 
Conrad Beck, C.B.E., F.R.M.S 399 
XIX. — Monochromatic Illumination. By H. Hartridge, 
M.D., Sc.D., F.R.M.S., Fellow of King’s College, 
Cambridge. (One Text-Figure) 406 
SUMMARY OF CURRENT RESEARCHES. 
BOTANY. 
(Under the direction of A. B. Rendle, M.A., D.Sc., F.R.S., F.L.S.) 
GENERAL, 
Including- the Anatomy and Physiology of Seed Plants. 
Cytology, 
Including- Cell-Contents. 
Belling, J . — Behaviour of Homologous Chromosomes in Canna 409 
„ — Counting Chromosomes in Pollen 409 
Structure and Development. 
Vegetative. 
Zinn, J . — Normal and Abnormal Germination of Grass-Fruits 410 
Harris, J. A., & Others — Vascular Anatomy of Seedlings of Pliaseolus 410 
„ ,, „ — Correlations in Anatomy in Seedlings of Phaseolus .. 411 
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