...in the evening. In other cases there is a slow rise up to the highest point, which occurs between n am and 3 pm The hygroscope generally sinks to zero...the stomata. As regards the visible spectrum, I find thatthe red rays are decidedly most efficient, but I am not able to find any evidence of a secondary...

...up to the highest point, which occurs between II am and 3 pm The hygroscope generally sinks to rero within an hour after sunset. The effect of heat has...that . the red rays are decidedly most efficient, but I am not able to find any evidence of a secondary maximum in the blue, such as Kohl (Bicbla/t zur Leopoldina,...

...contrary results, namely, that the stomata remain perfectly open even during prolonged deprivation of CO2. It is a vexed questionf whether or no the majority...effect of heat has not been fully studied, but enough lias been done to confirm previous observers who find that heat opens the stomata. As regards the visible...

...remains almost horizontal until a rapid fall begins in the evening. In every case there is a slow rise to the highest point, which occurs between 11 am and...after sunset. The effect of heat has not been fully investigated, but enough has been done, the author states, to confirm previous observations, which...

...the evening. In every case there is a slow rise to the highest point, which occurs between 11 am aud 3 pm The hygroscope. generally sinks to zero within...after sunset. The effect of heat has not been fully investigated, but enough lias been done, the author states, to confirm previous observations, which...

...the zero with the morning light; it rises rapidly at first, and afterwards more slowly. In some caceS it runs roughly horizontally until a rapid fall begins...that heat opens the stomata. As regards the visible spectrnm, I find that the red rays are decidedly most eflicient, but I am not able to find any evidence...

...the evening. In every c;ise there is a slow rise to the highest point, which occurs between 11 a. in. and 3 pm The hygroscope generally sinks to zero within...after sunset. The effect of heat has not been fully investigated, but enough has been done, the author states, to confirm previous observations, which...

...in the evening. In other cases there is a slow rise up to the highest point, which occurs between n am and 3 pm The hygroscope generally sinks to zero...that the red rays are decidedly most efficient, but I am not able tofind any evidence of a secondary maximum in the blue, such as Kohl (Bieblatt zur Leopoldina,...

...in the evening. In other cases there is a slow rise up to the highest point, which occurs between n am and 3 pm The hygroscope generally sinks to zero...that the red rays are decidedly most efficient, but I am not able to find any evidence of a secondary maximum in the blue, such as Kohl (Bieblatt air Leopoldina,...

...in the evening. In other cases there is a slow rise up to the highest point, which occurs between II am and 3 pm The hygroscope generally sinks to zero...been done to confirm previous observers who find that heal opens the stomata. As regards the visible spectrum, I find thai the red rays are decidedly most...