5. Describe the effect of a tight ligature upon a growing hazel stem. (1898)
6. What proofs can be given that the stem of a tree draws nourishment from the leaves? (1898)
7. Show, by describing and drawing one example, that the branch of a tree may preserve a record of past seasons in its wood. (1901)
8. Mention an experiment which shows that organic substance formed in the leaves travels down the stem outside the cambium. (1901)
9. Obtain thin sections (e.g. plane-shavings) of as many different kinds of wood as possible, and gum them into a book, writing under each section the name of the wood and the direction (transverse, radial-longitudinal, or tangential-longitudinal) of the section.
10. Make yourself familiar with the appearance and characters of the different kinds of timber used in carpentry and joinery.
11. Notice the light-brown spots on the bark of twigs of apple and horse chestnut. These are called lenticels; they are breathing-pores. In how many other trees can you find lenticels?
12. Observe whether an ivy stem puts out roots only where they can become fixed to a support, or indiscriminately.
13. Make a list of plants which you have observed to climb by twining stems, and note whether they are clockwise or counter-clockwise climbers.
14. Make careful drawings of all the tendrils you can find, and try to discover which part of the plant has been modified to form the tendril.