APPENDIX 1. 463 



the other on the same sheet, taking care that one part is not 

 materially thicker than the other, and lay over the specimens 

 one, two, three, or more sheets of paper, according to its 

 thickness or the thickness of your plants ; and so on, layer 

 above layer of paper and specimens, subjecting them then 

 to pressure. In a day or two, according to the more or less 

 succulent nature of the plants, or to the nature of the 

 climate, remove them successively into fresh papers till the 

 moisture is absorbed, and dry the spare papers in the sun or 

 by a fire for future use. 



A tin box or Vasculum is essential, made to shut close, to 

 prevent evaporation, in which the plants flill, if required, re- 

 main uninjured a day and night, especially if the box is well 

 filled. Some very succulent plants, and those of the Heath 

 and Pine tribe, are the better for being plunged into boiling 

 water for an instant before they are pressed. A portfolio 

 slung over the shoulder and containing a few quires of 

 drying paper to receive the plant as gathered, is em- 

 ployed by many collectors. 



"\Mien sufficiently dry, the specimens should be put into 

 papers ; one sheet or folio (more if the specimens be thick) 

 between each layer of plants ; and thus a great many may 

 be safely arranged in a small compass : and are ready for 

 transport covered with oil-cloth or packed in boxes. Mosses 

 and odier Cryptogamic plants may be generally dried in the 

 common way, those which grow in tufts being separated by 

 the hand, so as to form neat specimens. Most sea-weeds 

 require a slight washing in fresh water, and common 

 blotting paper is the best for removing the moisture from 

 this tribe of plants. 



Parcels or packages which may come by Her jNIajest/s 

 ships, or by any of the Royal Mail, or Peninsular and 

 Oriental Company's Steamers, should be addressed : 



'' On Her Majesty's Service. For the Royal Gardens, Kew. 

 " W. T. Thiselton Dyer, Directory 



" Royal Gardens, Kew, 



"London." 



