STUrt'TURK OF LIMULUS IIEAKT MUSCLE. 

 WALTER J. MEEK. 



a, 



Fig. 2. 



inn ini 

 »//// iJTT 

 am un 

 jnii ffjf 

 ///// iiu 



ifj isu 



HI L!i' 



^1 tin 

 m (777 



,01/] Uu 



d 



'^. 



Fig. 3. 



rHB .Joi.'Ii.NAL OF MOUPHOLOGY. VOL. XX, No. 3. 



Fig. 4. 



