"WHY THEr GROW SO VIGOROUSLY IN SPRING. 33 



long preceding labor. Not only was the tender verdure which, after a few spring 

 showers and sunny days, is so suddenly spread out over field and forest, all pre- 

 pared beforehand, — most of the leaves, even, made the summer before, and snugly, 

 packed away in winter-buds, — but the nourishment which enables them to un- 

 fold and grovv so fast was also prepared for this purpose by the foliage of the year 

 before, and laid up until it was wanted. The grain grows with vigor, because fed 

 with the richest products of the mother plant, the results of a former year's vegeta- 

 tion. The Lily-blossom develops in all its glorj^ without toil of its own, because all 

 its materials were gathered fi-om the earth and the air long before, by the I'oots 

 and the leaves, manufactured by the latter into vegetable matter, and this stored 

 up for a year or two under ground in the bottoms of the leaves (as starch, jelly, 

 sugar, &c.), and in many cases actually made into blossoms in the dark earth, where 

 the flower-buds lie slumbering in the protecting bulb through the cold winter, and in 

 summer promptly unfold in beauty for our delight. 



Analysis of the Section. 



51. The seedling is a complete plnnt on the simplest scale ; in growth it rasrely increases its parts, 

 and multiplies them in number, as fast as it makes materials for growth. 52. Simple stems, how 

 formed and carried up, piece by piece. 53. Branches : 64. of Roots, how they differ from those, 

 55. of Stems. Where these arise from ; in what form they appear. 66. Buds, what they are. 

 57. Terminal End, what it makes. 68. Axillary Buds ; why so named ; what they make. 59. How 

 branches are arranged, and what their arrangement depends upon: alternate; opposite. 60. The spray 

 and buds of .shrubs and trees in winter; Leaf-soars. 61. Why branches are not as regular and as many 

 as the buds or leaves. 



62, 63. The Duration and Character of Plants as affecting the way they grow. 64. Herbs. 65. Shrubs. 

 66. Trees. 67. Herbs are annuals, biennials, or perennials. 



68. Annuals ; their mode of life ; character of their roots, intended only for absorbing; duration, &c. 



69. Biennials ; how defined ; examples. 70. Character of their roots, and illustrations of their 

 mode of life ; the first year, food made and stored up ; the second year, food expended, for what pur- 

 pose. 71. How biennials may sometimes be made perennial, and annuals biennial. 72. The store of 

 food may be kept in the leaves, or in the stems above ground ; Cabbage, &c. 



73. Perennials ; what they are ; mode of life of perennial herbs from year to year ; accumulation of 

 food in roots. 74. Accumulation of food in under-gi-ound branches ; Tubers, as of Ground Artichoke. 

 75. Potato illustrated. 76. Accumulation in whole stems or branches under ground ; Eootstocks. 

 77. Accumulation of food in leaves, above gi'ound, as in Hoitseleek ; or in the bottonis of leaves, usu- 

 ally under ground ; Bulbs ; as of Lily, and, 78. of Onion. 



79. Food, how stored up in shrubs and trees, and for what purpose ; used in leafing and blossoming 

 in spring. 80. A lesson taught by vegetation. 



