6 One Thousand Objects 



portion may be burnt away, leaving the flinty star-shaped 

 hairs on the slide. Similar hairs are afforded by Deutzia 

 scaber, both greenhouse plants. (PI. I., fig. 2.) 



27. STELLATE HAIR OF HOLLYHOCK (Althca rosea). 

 The star-shaped hairs of the Hollyhock differ much in the 

 number of branches or rays. (PI. I., fig. 16.) 



28. STELLATE HAIR OF IVY (Hedcra helix). Somewhat 

 like the last, but with broader rays, and of a more scale- 

 like character. It is probably (from analogy in other 

 species) a stellate scale rather than a hair. (PI. I., fig. 2-4.) 



29. COTTON (Gossypium herbaceuni). It must not be 

 forgotten that Cotton consists of the hairs which surround 

 the seed of the Cotton plant. These are long cylindrical 

 hairs, which when dried become flattened and twisted, so 

 that they have been erroneously described as ' flattened 

 twisted bands.' Cotton and fine cotton fabrics are good 

 objects for the polariscope. 



30. BRANCHED HAIR OF MULLEIN ( Verbascum thapsus). 

 This may be taken as an example of a branched or 

 dendritic hair, of by no means uncommon occurrence. 

 (PL L, fig. 28.) 



31. STALKED CRUCIATE HAIR (Arabis sincnsis). Of 

 all plants the Crossworts (Crud/em) afford the greatest 

 number and variety of branched hairs. The figure is 

 typical of the Arabis hairs, which vary in the direction 

 and mode of branching. This is a common garden plant. 

 (PL L, fig. 6.) 



32. STALKED STELLATE HAIR OF FERN (Niphobohis sp.) 

 The hairs and scalesof ferns are usually attractive objects, 

 and those of an exotic fern belonging to this genus are 

 figured as an example of a stalked star-like scale. (PL 

 I., fig. 9.) 



33. GLANDULAR HAIR OF HELLEBORE (Hdlcborus 

 foetidus). The glandular hairs of the Stinking Hellebore 

 are surmounted by a club-like head or gland. Similar 

 hairs occur on some species of Goosefoot or Chcnopodium. 

 (PL L, % 5-) 



34. CLUBBED HAIR OF MULLEIN (Verbascum nigntm). 

 The anthers of this species of Mullein are hairy through- 



