We cannot particularise all the plants we desire, because our wants vary every year by new acquisitions and losses; but the administration will endeavour to give them to the inhabitants of distant countries who are willing to lists of supply our deficiencies. We will specify some families and kinds whose absence in our collection of living plants we regret. These are: 1º Those which grow alike in the tropical regions of the old and new continent: The Rhizophorees (mangliers and paletuviers) chailletices, connaracies, burmaniacees, xyridee, Eriocolons, Podostemees, the loranthus parasites, lardizabalees, Pistias. Among the Fern, Gleichenias, Trochomanes, Hymenophyllum, schizea, Danaea, Angiopteris, Salvinia and Azolla. 2º In Asia: Dipterocarpiees, aquilarinees (aloes or eagle-wood), Apostasiees, Guetrum (guemon of Molucca), the nipa, a kind of Palm-tree. _Dry vegetables or vegetables preserved in alcohol_. These collections contains: 1º Herbals or plants dried in leaves of paper; 2º Fruits and preserved seeds, either dry or in alcohol; 3º Pulpy flowers also preserved in liquor; 4º Portions of roots, trunks and samples of wood; 5º Different products of the vegetable kingdom, such as flax, starch, gums, resins, dyestuffs, substances employed in the medicine or the arts; 6º Samples relative to anatomy and vegetable physiology. The care necessary to enrich these collections are generally less than those required for zoology. Herbals and collections of fruits and flowers--Samples in buds, flowers and fruits of plants intended for herbals should be collected when the plant is small, and generally when it is of a size to be kept in a leaf of paper by folding. It should be taken with the root; when it is larger, it should be cut in pieces of 40 or 50 centimetres (16 to 18 inches). Or the great herbaceous plants, whose leaves vary often at different heights on the trunk, the base of the stalk with the leaves that support it should be preserved,--and branches with flowers and leaves. A layer of several leaves of brown paper is placed alternatively with a sample of a plant, or several, if they are small and can be spread on the paper without touching. Then a new layer of paper, then a new sample, and so on. When the packet has a certain thickness (2 to 3 decimetres at most) it should be pressed between two pieces of paste board by means of cords or girths and a buckle. The pressure should be moderate, enough to prevent the plants from wrinkling, but not enough to change their shapes, or crush their tissue by flattening them too much. The parcels, to dry well, should be placed on a dry board; or, better, hung up, so that the boards be in a vertical position. It is well to change several time the layers of paper; first, soon after the drying has commenced.