If your collection of sea weeds is for a regular herbarium you should by all means have mounting paper of the standard size and quality; heavy white, unruled paper, of a quality which will stand wetting without being spoiled, eleven and one half by sixteen and one fourth inches. If you are merely making a few souvenirs of your summer at the shore, your own taste is the only thing to be considered. You will require genus covers, labels, etc., just as for flowering plants. For the work of mounting you will want plenty of driers, some pieces of muslin the same size, sheets of standard size mounting paper as described above, a heavy needle fitted into a wooden handle, a pair of forceps, scissors, two smooth boards, and weights. For complete enjoyment of the work you will surely have a little magnifying glass, for your pressed specimens will never be as beautiful as the fresh ones. [Illustration: Sea weed mounted on paper of standard size] With several shallow dishes of sea-water within easy reach of your hands, and your pails of specimens floating in sea-water, you are ready to begin. Select your first specimen and lift it with care from the water. Dip it up and down gently in clean water. Every bit of matter that does not belong strictly to that plant must come off, and all the sand or other dirt. Let it spread out naturally in the water and with your scissors prune it to suit your purpose. Some grow in such a bunch that they will not show well on the paper, others may have to be trimmed to get them onto the page. Do not, of course, trim them down to look alike but preserve their peculiarities and characteristics. The great charm in a collection of this kind is in its variety. When the plant is absolutely clean, float it in a dish of clean water. This last dish should be a broad one for now you are to slip your sheet of mounting paper right into the water and get the plant onto it, floating it out in a natural attitude. This takes a knack, you may be sure, but the knack can be acquired with practice. If you can provide yourself with a pane of glass to lay the sheet upon when you take it from the water you will have the best conditions. Some people get along very well with a shallow plate. Some of the delicate parts will be certain to cling together as you lift them out of the water, but you can remedy that by dipping a few drops of water onto them and with your needle you can arrange them as you wish. Take your time. This is not a job for a person in a hurried mood. Examine and admire each piece as you work at it. Make it yours for all time, although you may sell it the following day and never see it again. Lay one of your driers on the lower board, put a mounted specimen all wet as it is, on this, then spread over the sheet a piece of muslin, lay on another drier, mount another sea-weed, cover it with cloth and so on you may build up your pile. Top it with a drier, put on the second board, and your weight, of ten pounds or so.