To Binder : — Insert fo face page 142.] 



COEEIGENDA. 



Page 142, line 10, for "too intimate connection," read "combined use." 

 „ 143, „ 20, omit "it" 

 „ „ „ 25, omii " so." 



„ „ „ 31,/or "Boo;uslaus,"r<?«</"Bosislaus." 

 „ 145, „ 9, for " effective," read " efScient." 

 „ „ „ 4 (of the note), for " when," read " that is to say." 

 „ 4:7, „ 6 (from bottom of the note), /or " extremities," read "ex- 

 tremity." 

 „ 54, „ 8, />r " casual," rtf«c? " causal." 

 „ x55, „ 29, /or " furrowed cells," r^a^? " cleavage-cells." 

 „ 158, „ 2,/or "in,"reffrf"upon." 

 „ 159, „ 29, /or " grooving," read " cleavage." 

 „ 161, „ 30, /or "indistinguishable," r(?«(5? "not an independent one." 

 „ 163, „ 8, for " as an organ of departure for the skin," read 



" having as an organ of departure — the skin," 

 „ „ „ 10, /?r "as an organ of departure for the intestine," re^rf 



" having as an organ of departure — the intestine." 

 „ 164, „ 30,/or " latter, just," read " latter. Just." 

 „ 165, „ 4, /or " during the grooving," read " during cleavage." 

 „ „ „ 4, /or "furrowed cells," re«<^ "segmentation-products." 

 „ „ „ 5, /or "germinal vesicle," r^tffi? "blastodermic sac." 

 „ „ „ 15, for " before it developed the true body cavity," read 

 " before the true body cavity developed." 



To Binder : — Insert to face page 223.] 



COEEIGENDA. 



Page 227, line 4, omit " the." 



„ 228, „ 12, omit " much more." 



„ 230, „ 19, for " germ-lamellse," read " germ-lamella." 



„ 236, „ 18, /or " is of different epochs and of phylogenetic origin," 

 read " is phylogenetically of different epochs and 

 origin." 



„ 238, „ 3 (from bottom), /or "furrowed cells," r^<a!«? "cleavage- 

 masses." 



„ 239 „ 32, for " constitutive," read " constituent." 



„ 240 „ 8, /or "improvement," rcac? " development." 



„ „ „ 1 9, /or "very," rcffc? "every." 



