126 HAIRS AS A PROTECTION. HONEY, [chap. 



stiff fences, to protect it during its helpless period of 

 quiescence. 



Vaucher long ago observed, though he gave no 

 reason for the fact, that among the MalvacecB 

 (Mallows) the species which produce honey are hairy, 

 and those which do not are glabrous. 



Is we make a list of our English plants, marking 

 out which species have honey and which have hairs, 

 we shall find that we may lay it down as a general 

 rule that honey and hairs go together. The ex- 

 ceptions, indeed, are very numerous, but when we 



Fig. 78. — Pupa of Eunomia eagrus. 



come to examine them we shall find that they can 

 generally be accounted for. I have made a rough 

 list of the species in the English .flora which have 

 honey and yet are glabrous. It does not profess to be 

 exactly correct, because there are some species with 

 reference to which I was unable to ascertain by per- 

 sonal examination, or by reference to books, whether 

 they produce honey or not. My list, however, com- 

 prised 1 10 species. 



Now, in the first place, in sixty of these 1 10 

 species the entrance to the honey is so narrow that 



