1907-1908O Further Note on the My gale Spider. 8 1 



quantitative results must be obtained and compared with our 

 actual system. Many modifications may be necessary and 

 possible. But so far as the details have been worked out, 

 nothing directly contradictory to the hypothesis, or seriously 

 impugning its validity, has been discovered; while it appears 

 capable of explaining in a natural and satisfactory manner all 

 the main features of our system. Moreover, it has been hailed 

 with enthusiasm by geologists as being far more consistent 

 with the geological history of the earth than the nebular 

 hypothesis has ever been ; and also as agreeing perfectly with 

 the known facts relating to the internal composition of the 

 earth, and with the structure of extra-terrestrial bodies as 

 revealed by meteorites. It appears to get rid of certain diffi- 

 culties which have for long seriously embarrassed geologists, 

 and it does the same for the astronomer. Whether or not it 

 is destined to take its place permanently as the best and most 

 probable solution of the problem, time alone can show. At 

 all events, it affords a most ingenious, suggestive, and stimu- 

 lating contribution to the philosophy of world-making. 



[In illustration of the above, a large number of lantern- 

 slides were shown.] 



FURTHER NOTE ON THE MYGALE 

 SPIDER. 



By Mr JAMES ADAMS. 



{Sept 1908.) 



In the last volume of ' Transactions,' p. 406, under date October 

 1907, is a supplementary note on the Mygale Spider, ex- 

 hibited on April 24, 1907. In that note appears the 

 following : " On examining the cast skin, it was noticed that 

 it had cast the left fore-leg with it, and for the present it is 

 minus a leg; but should it live to change its skin again, it 

 will in all likelihood reproduce the lost member." 

 VOL. VI. F 



