Appendix 369 



Certain objections arise to affirm that, in 

 this instance, the tool is not the sole regulator 

 of the work. Were the arrangement of the 

 thread determined by the length of the legs, 

 we should find the spiral volutes separated 

 more widely from one another in proportion 

 to the greater length of implement in the 

 spinstress. We see this in the Banded Epeira 

 and the Silky Epeira. The first has longer limbs 

 and spaces her cross-threads more liberally 

 than does the second, whose legs are shorter. 



But we must not rely too much' on this rule, 

 say others. The Angular Epeira, the Pale- 

 tinted Epeira and the Cross Spider, all three 

 more or less short-limbed, rival the Banded 

 Epeira in the spacing of their lime-snares. 

 The last two even dispose them with greater 

 intervening distances. 



We recognize in another respect that the 

 organization of the animal does not imply an 

 immutable type of work. Before beginning 

 the sticky spiral, the Epeirse first spin an 

 auxihary intended to strengthen the stays. 

 This spiral, formed of plain, non-glutinous 

 thread, starts from the centre and winds Id 



2A 



