294 NE\\' JERSEY AGRICULTURAL COLLEGE 



It was found that the beans were able to complete their entire 

 life history in the canvas tent shade and ripen fruits. The seeds 

 differed in no apparent characters from those of the control 

 plant. The cucumbers flowered freely, but produced only male 

 flowers. None of the other plants flowered in the shade. In 

 the case of the beans the first open flower and the first ripe fruit 

 were reported on the same day for both shade and control plants. 



It appears from the measurements taken after June 28 that 

 in the seedlings of all plants under observation the hypocotyl 

 averaged longer in the shade than in the sun (number of plants 

 varied from 105 to 700). Beans and radishes grown in the 

 shade averaged a greater total height than the controls, but con- 

 trol tomatoes averaged higher than shade plants; the length of 

 the lamina of the leaf was less in the shade plants of radishes, 

 lettuce, and tomatoes, while unchanged in the beans. The width 

 of the lamina was less in the shade radishes and lettuce, but un- 

 changed in the beans. The length of the petiole was decreased 

 in the shade tomatoes, increased in the shade lettuce, and left 

 unchanged in the bean. The number of leaves in the plants was 

 the same in the beans, but less in the shade plants of lettuce, 

 radishes, and tomatoes. (See Plates XXXI and XXXII.) 



In the older plants it was noted that in all plants excepting the 

 beans and Bryophyllum growth soon became much slower in the 

 shade plants, so that the shade seedlings which had appeared 

 taller the first few days, on account of their longer hypocotyl, 

 soon were outgrown by the controls. In all cases stems, leaves, 

 and petioles of shade plants were thinner. 



Among the plants put in later the corn differed from its control 

 by the successive shortening oi the upper internodes, which is 

 exactly the opposite of what happens in the normal plants. The 

 Kochia plants, which had developed a few short branches when 

 transplanted, became large much-branched bushes in the sun, but 

 developed no more branches in the shade and grew at a very 

 slow rate. 



The four Bryophyllum plants are now (November 22) still 

 about as tall as the controls, but darker in color, with thinner 

 stems and smaller leaves. (See fig. i, Plate XXXIII). They 

 have so far failed to develop compound leaves, which in the con- 

 trols appeared in the 7th and 8th leaf above ground. 



None of the radishes developed any storage roots in the shade, 

 though most of the control plants ran through their entire life 

 history of producing large roots, flowering, and maturing seed. 

 In beans, cucumbers, Bryophyllum, the shape of the leaves was 

 not changed. Little changes took place in the shape of tomato and 



