The materials and implements necessary are a strong pruning knife, a species of wallet, some eighteen inches long, four inches deep and eight broad - one that can be suspended by straps from the shoulder is the best. A very good one can be made by any ingenious youth out of a piece of bookbinder's millboard, and covered with leather or black American cloth. It may be fitted with a strap or two to fasten it. Tin boxes, japanned, are sold at the herbalists for the purpose, but they are not so handy as a homemade one. A smaller wallet for the pocket may be made in a similar manner, to hold choice specimens and the smaller varieties of plants. Each of these cases should be fitted with strips of dry blotting-paper, and a number of pieces of pasteboard or millboard, covered with blotting-paper. The wallet and box should be half filled with these. They may be held together firmly by two or three ordinary India-rubber elastic bands. You are now fitted for a botanical excursion, either by yourself, or with a friend, or in company with the nearest Field Naturalists' Club. In selecting your plants, choose the most perfect specimen, and dig up the root as entire as possible, so that you may have root, stem, leaves, flower, and, if possible, the fruit of every plant complete. Gently shake the superabundant earth away, and lay your specimen between two or three sheets of your blotting-paper. Do this carefully and at once, as many plants wither and curl in a few minutes after being gathered, though others will remain without injury for hours. The plant should be laid flat, so as to preserve all its natural characteristics, and in order to do this it will be needful to break off some of the superabundant foliage and stems. On returning home, it will be necessary to complete the drying of the plants, to ensure their complete preservation. All that is requisite, is a little care and a few strips of wood, a supply of porous paper, and if blotting-paper is not available, old newspapers will answer the purpose. Two or three straps with buckles will be required, to press the boards tight. The outside board should first be wanned at the fire, and two or three thicknesses of paper, also warmed, laid over it. The plant should be arranged carefully on this in the manner it is wished to preserve it. The leaves should be smoothed, and the flower and stem bent, if necessary, within the required space. Then place more warm paper, and repeat the process until some eight or ten specimens are included. A piece of board is then laid over all, and tightly strapped up. The boards are then laid on some dry convenient spot, and a few books or other weighty articles may be placed at the top to press them. Some of the aquatic and other plants of a moist nature will require to have the paper changed once or twice ere the drying process can be completed. It will be found that dandelions, thistles, and hawk-weeds will ripen their seed during the drying process; whilst others, such as the pines, are likely to crumble to pieces : to obviate the latter, the specimen should be plunged into boiling water for a few minutes prior to being placed within the blotting-paper. Fungi will require particular treatment, as they cannot be pressed. The firmer varieties should be placed in separate sheets of blotting-paper, and the jelly-like varieties in tin boxes nearly filled with silver sand. The sand will act as an equal pad to the plant, and as an absorbent during the drying process, during which the sand must be changed two or three times, and the boxes placed near a good fire.