RECEPTACLES OF PROPER JUICES. 107 



the air, as the spongioles absorb water ; and the opmion 

 appears very likely. Ought these hairs to be confounded 

 with the fibrilles ? * I am still in doubt ; and it must be 

 confessed, at least, that if the fibrilles of roots are kinds 

 of hairs, as Kieser says, they differ from those which 

 I here designate, in their longer duration, their firmer 

 texture, and perhaps in the faculty of one day becoming 

 branches of the root ; whilst the Radical Hairs are very 

 fugitive and soft, and never appear to be transformed 

 into branches. This subject, which has scarcely been 

 studied, merits the examination of observers. I will 

 add, also, that the hairs which are found at the base of 

 several fleshy Fungi are very nearly allied to the Radical 

 Hairs of vascular plants. 



CHxiPTER XL 



OF THE RECEPTACLES OF PROPER JUICES. 



Under the name of Proper Juices (sues propres) 

 have been for a long time described those coloured fluids 

 of a peculiar nature which are found in certain plants ; 

 and the vessels in which they are stored up have been 

 called Proper Vessels (vaisseaux propres). They 

 were so compared to true vessels, that it is only within 

 these few years past that they have been studied with 

 any care. We will speak of the Juices when we treat 

 of the Secretions of Plants : we are now only about to 

 describe the form of the vessels which contain them. 



* French Clievelu. 



