2. Describe the fruit and seed of four of our commonest trees, explaining in each case how the seeds are distributed. (N.F.U.)
3. Make observations to find which of the following trees endure shade most readily—oak, beech, elm, sycamore, chestnut.
4. What do you suppose are the advantages and disadvantages of shading and crowding trees, as regards the quality of the resulting timber?
5. Study young pines and firs, and find out during which period of life they grow most rapidly.
6. Which trees have you found growing (a) in heavy clay soils, (b) in sandy soils?
7. Describe any observations upon six common British trees which could be made during a walk in early spring. (N.F.U.)