An excellent way, which I regret not having followed, for keeping the lists of all you have in your garden - a plan as useful as it is instructive - is to get what are called visiting-books, with the alphabet marked on the pages down the side. It is better to have two of these books - one for shrubs, which would include fruit-trees, the other for perennials and annuals of all kinds and greenhouse plants. The very earnest student might add a vegetable book, with remarks as regards success or failure of experiments.