Cuap. I. TWINING PLANTS. 29 
(DICOTYLEDONS, continued.) 
Rivea tiliefolia (Convolvulaces) moves against the sun; 
made four revolutions in 9 hrs.; so that, on an average, each 
was performed in 2 hrs. 15 m. 
Plumbago rosea (Plumbaginacese) follows the sun. The shoot 
did not begin to revolve until nearly a yard in height; it then 
made a fine circle in 10 hrs. 45m. During the next few days it 
continued to move, but irregularly. On August 15th the shoot 
followed, during a period of 10 hrs. 40 m., a long and deeply 
zigzag course and then made a broad ellipse. The figure 
apparently represented three ellipses, each of which averaged 
38 hrs. 33 m. for its completion. 
Jasminum pauciflorum, Bentham (Jasminacese), moves against 
the sun. A circle was made in 7 hrs. 15 m., and a second rather 
more quickly. 
Clerodendrum Thomsonit (Verbenacez) follows the sun. 
H. M 
April 12, Ist circle was made in . 5 45 (shoot very young) 
» 14, 2nd ” 2” ” * 3 30 
(directly after the 
» 18, a semicircle - . 5 02 plant was shaken 
on being moved) 
» 19, 8rd circle ,, 55 . 8 0 
” 20, 4th ” ” ” . 4 20 
Tecoma jasminoides (Bignoniacez) moves against the sun. 
HK M. 
March 17, Ist circle was madein . 6 30 
» 19,2nd , » » . 7:0 
» 22, 8rd ,, 5 ss . 8 380 (very cold day) 
”? 24, 4th ” Pd ” ° 6 45 
Lhunbergia alata (Acanthaces) moves against sun. 
HR M 
April 14, Ist circle was madein . 3 20 
»? 18, 2nd a9 ” ” . 2 50 
” 18, ard ” ”? ” . 2 55 
» 18,4th ,, 55 #8 . 8 55 (late in afternoon) 
