1. 1. Object, _a Leaf_. Children, what do I hold in my hand? _A leaf._ What can you tell an about it? One says it has _form_; others, _color_, _substance_, _length_, _breadth_, _thickness_, _branches_ in its frame like the tree, all _different_, etc., etc. What is a leaf? _The clothing of trees._ Gen. viii. 11. 2. What does the Bible say about a leaf or leaves? Shall not wither, Ps. i. 3--be green, Jer. xvii. 8--not fade, Ezek. xlvii. 12--fadeth, Is. i. 30--sewed fig-leaves, Gen. iii. 7--cast their leaves, Is. vi. 13--fair, Dan. iv. 12, 21--nothing but leaves, Mark xi. 13--putteth forth leaves, Mark xiii. 28. Enlarge and illustrate any points. 3. See Rev. xxii. 2: And the _leaves_ of the tree were for the healing of the nations. See _bad_, _poisonous leaves_. Upas tree, poison-ivy, etc. See _good leaves_.--Sassafras, balsam, wintergreen, etc. The _leaves of the Bible_ are for the healing of the nations, etc. Corrupt _leaves_ or bad books blight and destroy. II. Object, _a Grapevine with cluster of fruit_. _Cut_ branch will not _unite_ again with the vine. _Prune_ so as to produce fruit, otherwise will run to leaves. Taste of good fruit. See fruits of the Spirit, Gal. v. 22, love, joy, peace, etc. How bear such, etc. III. Object, _a Pin_. Sharp, straight, and shining. How many for a penny? Thirty persons to make it. So little and cheap, not valued. So of common blessings--air, light, water. Feel your pulse. Not live without it. _So learn to value little things._ See its value in need, as in storms, cold, etc. So value Bible, health, school, church, etc., while you have them. Bend it, and it becomes _crooked_,--so crooked _tempers_, _tongues_, etc. IV. A _Sprig of Evergreen_, broken off, may teach us to _abide_ in Christ. V. _Salt_, as a grand _preservative_. A _Rotten Apple_, influence and decay. VI. _Flowers_, so beautiful and frail. A pansy may teach _humility_, a daisy, _cheerfulness_, a rose, _goodness and virtue_, a lily, _purity_, etc. XIV. THE BLACKBOARD.