[147]

Light Index of M.S

Useful references

p. 60 Beta vulgaris— zig-zag line to light.

60B Quercus Quercus — very sensitive to light — young stem

p. 57 Tomato excellent case light not intended— I thought so feeble might be neglected

83 Asparagus influenced by light of roof?

86 Phalaris actual movement .3 of inch

87 circumnutation of seedling on level with ground — crossed 2/500 in 9'/ 15" or on av 1/50 of in in 45.'— Effects on sand

89 Zea— strongly zig-zag line when when within box inner of which inside of which illuminated

90— radicles apparently circumnutate

91. Avena— zig-zag line — circumnutated as day became dark

These cases led us to try on specimens of 7 with several plants a series of exper wh, in wh when we knew moved rapidly & strongly to a moderately bright light, a series of experiment by dimming the light.— & [illeg].