ERRATA TO VOL. I ri. 



Page 1, line 13, for Hagerman, read Hageuman. 

 Page 5, line 30, for Vetumnus, read Vertumnus. 

 Page 9, last line, for 1873, read 1874. 

 Page 11, line 31, for virticillata, read verticillata 

 Page 13, line 34, for cappilare, read capillar e. 

 Page 23, line 4, for Smythella, read Samythelln,. 



Page 28, line 19, for Caridon, read Caridion. 



Page 35, line 3, for Scapellum, read Scalpellum. 



Page 58, line 14, for branches, read branchlets. 



Page 60, line 12, for Plate X, read IX. 



Page 167, formula (168), for m,, read /^,. 



Page 167, formula (169), for m^, . . . m„_i, read ^,, . . . fin-\. 



Page 239, formula (333), for — read —. 



t a.it 



Page 295, note f, 1st line, for Ueber de Gliedmassen, read Ueber das Skelett der Glied- 



massen. 

 Page 304, note, for prominal, read proximal. 

 Pa^e 356, last line but two, for crystalline solid, read solid of continuous crystalline 



structure. 

 Page 385, line 13, for M', read M. 



Pages 391, 394, 395, 400, in headings, after Discontinuity, add between Fluid Masses. 

 Page 403, line 10, after any other film, add of the same components. 

 Page 405, line 29, after this, add case. 

 Page 432, line 15 of foot-note, for II, read II,. 



In figure 40, plate XVI, there is a series of ovals around one-half of the real double 

 points. There should be added to the curve, as represented, a like series of 

 ovals aroimd each of the remaining real double points. 



