PLATE VII. 



FIG. 



1. A grain of Cocculus Indicus, n. s. 



2. A diagram of the seed constructed from dissections ; a, the outer 



skin, composed of irregularly-shaped cells full of dark brown 

 colouring matter in three or four layers overlying ; b, elon- 

 gated branching fibrous cells, anastomosing amongst the 

 elongated fibres (r) and the cylindrically formed wood cells 

 at g: these form the hard or woody portion of the grain, in 

 which are seen at intervals the spiral vessels {s v) ; d, layers of 

 double-pointed fibres with thickened walls and lateral channels ; 

 e, albumen of the seed (cellular), containing much starch ; 

 /, cells of albumen separated to show their pores. 



3. A grain of Paradise, magnified 8 diameters. 



4. A diagram of the seed : a, the elongated wavy cells of the outer 



skin, overlying b, the woody tissue, amongst which are 

 numerous oil receptacles, : the branched fibres are seen 

 anastomosing amongst these, e; c, the thin tough-walled 

 cells of the albumen, containing abundance of minute starch 

 granules. 



5. Oil globules from the large cysts at b. 



6. A grain of Datura Stramonium, magnified 2 diameters. 



7. A horizontal diagram of the seed : a, long thin-walled cells of 



outer seed coat ; b, layer of thick-walled coloured cells under- 

 lying it ; <", a layer of long delicate cells underlying these, and 

 overlying a layer of same fo'rm at a right angle to these ; 

 e, cyst containing dark brown colouring matter ;/, a layer of 

 long delicate cells with thin walls, and another of short cells 

 with thick walls firmly attached to albumen [g), composed of 

 very thick-walled cells laden with minute starch granules; 

 g, cells of albumen very highly magnified. 



G 



