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JOURNAL OK CON'CliOl.OC.V, VOL. lO, NO. 3, JULY, I90I. 



the floor. At last he fixed the end to a stick, by which he was enaljled, by turning 

 the stick round, to wind up the thread faster than it was produced. The thread; 

 however, soon broke, and after these trials, although the Slug made several 

 attempts to spin, it as often fell to the ground ; on which it was put into wet moss, 

 and the next day seemed so far to have recovered ... as again to go through 

 the former experiments. . . . The secretion, of wliich the thread was formed, 

 was wholly from the under parts, and not from the back or sides; . . . nor 

 did it proceed from any orifice in the tail, for in some experiments it was suspended 

 by the tip of the tail, at other times from full an eighth of an inch on one side of it. 

 It was by means of an undulating motion of the belly, similar to that in 

 the act of crawling, that the flow of the viscous secretion was produced towards the 

 tail. 



Fig. I. 

 After Latham, Trans. Linn, .^oc, vol. 4, 1708, pi. 8, figs. 1-4. 



The paper is accompanied by drawings which I Iiave copied in fig. 

 I. The author thought it possible that every specifs of "Limax" was 

 able to spin. Montagu had noticed, however, that some iiidivid^ials 

 could not be induced to do so. 



5. Cuvier, G. Memoire sur la Limace (limax) et le Colimagon 



(helix), Ann. Mits. Hist. Nat., vol. 7, 1806, p. 146. 



La liinace a encore sur son extremite posterieure une petite ouverture 



qui manque au collinacon, et d' ou sort de temps en temps une espece de mucosite 



qui se desseche aisement, et dont 1' animal sesert pourse suspendre aux divers corps. 



Limax=^Arion; it is a mistake to suppose the caudal-gland to be 



concerned in spinning. 



6. Davies, H., in Pennant's British Zoolog}', vol. 4, 1812, p. 76. 

 A slug observed suspended from a projecting part of a l^uilding. 



