18 VEGETABLE ORGANOGRAPHY. 



slits ; but no other phy totomist has ever seen the like. 

 It appears that this error arose in different cases, from 

 one of the two following causes : — 



1st. One might take the amylaceous granules whilst 

 they adhere a little to the walls, or those of the colour- 

 ing matter and of the woody matter, for integrant parts 

 of the tissue. 



2d. In the opinion of those who consider the Stran- 

 gulated Vessels (vaisseaux en chapelet) as kinds of cel- 

 lules, we m.ight be justified in saying that their tissue 

 was dotted ; but still, even in this case, it was very 

 hazardous to call them porous. We will examine the 

 nature of these markings of the tissue, when we direct 

 our attention to the different classes of vessels. We 

 digress for a moment, to prove, after the almost unani- 

 mous testimonv of anatomists, and even our own obser- 

 vations, that cellules properly so called, whether round 

 or elongated, are formed of a transparent tissue, which 

 is neither dotted, nor pierced with visible pores, nor still 

 less marked with transverse slits. 



Section IV. 



Of the Relation of the Cellules mutually, or of the 

 Continuity of the Tissue, and of the Intercellular 

 Passages. 



The most important question which can present itself 

 upon the nature of the cellular tissue, is to know if all 

 the parts which compose it are distinct bodies, more or 

 less united to each other, or if they are the doublings of 

 a single continuous membrane. This question affects 



