FUNGI. 11* 



<< The separate parts of the genera Phallus and Ciathrus, I fill 

 with cotton. I keep them for a time exposed to a dry atmo- 

 sphere, and then after removing the cotton, subject them to 

 pressure. The same may be done with the large trcmelloid 

 PezizcE.'' 



To this Dr. Hooker adds : — '•' I have witnessed, with groat 

 satisfaction, the whole of the above process for drying the fleshy 

 Fungi, and have now many specimens in my Herbarium pre- 

 served according to this method. Not only is the outline of 

 the Fanr/us thus retained, and in most instances, its essential 

 distinguishing character ; but there is this further advantage, 

 that from the specimens containing a smaller quantity of fleshy 

 matter, they are infinitely less liable to the depredations of 

 insects than if the whole Fungus were submitted to pressure. 

 In order to protect my Herbarium, in general, as much as 

 possible from these troublesome visiters, I wash (with a camel- 

 hair pencil) or sprinkle, such specimens as are most subject to 

 them, with oil of turpentine, in which I put a small quantity of 

 finely pounded corrosive sublimate. It is true that this sub- 

 stance is not dissolved in the oil; but by shaking the bottle 

 before using it, it is widely spread over the specimen so treated, 

 and remains to protect the plant after the oil lias evaporated. 

 Spirit of wine extracts the colour from the plant, and soils the 

 paper on which the latter is fastened, as I have ascertained by 

 experience." 



Dr. Hooker's collection is arranged in the following manner : 

 For each genus, or if the genus be large, each subgenus or 

 division, a sheet of cartridge paper is taken, marked in the 

 centre, a little above the bottom of the fir>t pnge, with the 

 number of the Class and Order ; then, below this, if the division 

 of the order or genus is denoted by any name, this is inserted, 

 and lastly, at the left-hand corner, in the same line, the nnmi)er 

 and name of the genus, together with the authority on which it 

 is founded, as follows : — 



CLASSIS 2. 



OllDO. IV. 



13. Srr MAHiA, /V;.. MYXOGASTRES. 



The specimens arc glued upon separate pieces of paper, (the 

 best plan probably is to havt; them 4to., 8vo., l:2nio , foolscrip 

 size) and these, after they have been labelled in the left hand 

 corner at the base, are pinned, with very fine pins, at one of the 

 upper corners to tl»e third page of a sheet of paper, whii h is 

 soft and flexible, but moderately thick, each sheet thus contain- 



