8PERMAPHTTE8. 87 



water, and of pansy or of violet in a 30 per 

 cent, solution. Support the cover-glass. 

 Examine at once, first with the low and then 

 with the high power. Look for the nuclei. 

 Examine at the end of an hour, and again 

 after another hour. 

 Sketch different stages. 



SEEDS. 



Examine seeds of the bean, of the pea, of 

 buckwheat, of Indian corn, and of wheat 

 that have been softened in water. Ex- 

 amine also dry seeds of the castor -oil 

 plant. 

 I. Bean. 



1. Observe on one side the oval spot (hilum) to 



which the stalk (funiculus) that fastened the 

 seed to the pod was attached. 



2. Find near the hilum a minute opening, the 



micropyle. If the bean is slightly squeezed 

 a drop of liquid may be pressed out through 

 the opening. 



Cut the seed-coats along the convex edge of 

 the bean, remove them, and examine their 

 inner surface for the internal opening of the 

 micropyle. 



3. Find the chalaza the base of the nucellus 



where the seed-coats blend with each other. 



