558 



APPENDIX. 



8. The plant just, 

 coming up. 



JO. The plant 

 .straightening up. 



Strengthen itself up, as it is doing in Fig. 10, 

 and it is soon standing proud and straight, as 

 in Fig. 1. We now see 

 that the reason why the 

 seed came up on the plant 

 in Fig. 2 is because in 

 some way the peg did not 

 hold the seed coats down 

 (see Fig. 13), and the 

 expanding leaves are 

 pinched together, and 

 they must get themselves loose as best they can. 



There is another thing about this curious squash plant 

 which we must not fail to notice, and this is the fact that 

 these first two leaves of the plantlet came out of the seed 

 and did not grow out of the plant itself. We must 

 notice, too, that these leaves are 

 much smaller when they are first 

 drawn out of the seed than they 

 are when the plantlet has straight- 

 ened itself up. That is,_ these 

 leaves increase very much in size 

 after they reach the light and air. 

 The roots of the plantlet are now 

 established in the soil and are tak- 

 ing in food which enables the plant 

 to grow. The next leaves which 

 appear will he very different from 

 these first or seed leaves. 



These later ones are called the true leaves. They 

 grow right out of the little plant itself. Fig. 11 shows 

 these true leaves as they appear on a young crookneck 

 squash plant, and the plant now begins to look much like 

 a squash vine. 

 We are now 

 curious to know 

 how the stem 

 grows when it 

 backs out of the 

 seeds and pulls 



the little seed leaves with it, 

 and how the root grows 

 downwards into the soil. 

 Now let us pull up another 

 seed when it has sent a single 

 root about two inches deep 

 into the earth. We will 

 wash it very carefully and 

 lay it upon a piece of paper. Then we 

 win lay a ruler alongside of it, and make 



an ink mark one-quarter of an inch from the tip, and two or 

 three other marks at equal distances above (Fig. 12).* We will 

 now carefully replant the seed. Two days later we will dig it 



The plant liber- 

 ated J rom the seed- 

 coats. 



• NOTE -Common ink will not answer for this purpose because it 'runs ^^^en the root 

 is wet but indelible ink, used for marking linen or for drawing, should be used. It should 

 ilsHe said that the root of the commou pumpkin, and of the summer bush squasncs, is 

 roo°fib?o?fs1nd branchTfor this test. It s^^LA ^^f.^'t?;' tat'uieTe\im1n°.iS^^^^^ 

 of ita vorv tin hill f hipHv lu a uaffow zoue lust back of the tip but tne aeterminaiion oi 

 thifp^fnf is father too dffficuH for the beglu^ier, and, moreover, it is foreign to th^purpose 

 of this tract. 



