VEINS OF THE LEAF. 



11 



LESSON II. 



VEINS AND VENATION OF THE LEAF. 



6. The blade of the Quince leaf (Fig. 2) shows many veins 

 running through it, and branching all over it. Examine 



blcide. 



Fig. 2. Leaf of the Quince, showing the veins. 



them. First, the petiole seems to be extended and continued 

 right through, from the base to the apex, forming the largest 

 vein in tlie leaf. This is the midvein, 



7. lS[ext observe several large branches sent off from this 

 midvein on both sides, right and left. These are the veinlets, 

 Now, looking at these veins, their arrangement reminds us of 

 a feather, and we call such leaves feathti'-veiJied. Therefore, 



Violet ? Do all kinds of leaves have petioles ? — of Plilox, for example 1 

 Wliat do you understand by sessile leaves ? 



6. Describe the midvein of the Quince leaf. 



7. Describe the veinlets. What is the feather-vcincd venation ? 



