96 BOTANY. 



purslane. Then make careful notes of diurnal and nocturnal positions 

 of the leaves of as many plants as possible. Where it is possible to 

 do so, it is recommended that photographs be taken of the waking 

 and sleeping states of plants. Careful sketches, at least, should be 

 made. 



ig) Select a symmetrically grown fuchsia, place it in a window, 

 and note the rapidity with which the leaves and stems turn toward 

 the light. 



(h) Germinate various seeds in a window, and observe the helio- 

 tropism of the seedlings. 



(i) Grow a strawberry-geranium (Saxifraga sarmentosa) in a hang- 

 ing basket or pot in a window, and observe that the dependent runners 

 bend away from the light. 



(J) Germinate beans, and after the radicles have protruded a centi- 

 metre or two fasten the seeds in such a way (under a bell-jar) that the 

 radicles point directly upwards. Observe that the roots soon begin 

 bending towards the earth. 



{k) Grow a few sensitive-plants in pots for study of irritability. 

 Seeds may be procured at any seed-store for a few cents, and are 

 easily grown In a warm room. 



