CORRECTIONS. 



i=n i = i 



2' ^'"^ 2' 



p. 9.-— For 



P. 15, equation (23). —For (i?f+i — 22^), read (R\— Bi-i). 

 P. 28, equation (53). — For 244, read 2.44. 



P. 32, last line. —For (—'Y road (^^Y. 



P. 34, line 11. — For compounded, read compound. 



Equation (61). — For ^^ , read ^^ . 



t = < = 



P. 36, last line but one. — For from, read for. 

 Foot note. — For 458, read 455. 



P. 70, line 16 from top. —For 6, read 8. 



P. 77, line 3 from bottom. — For I, read II. 



P. 128, line 5 from top. — For Posidomya, read Posidonomya. 

 Last line but one. — For Bucanopis, read Bucanopsis, 



P. 218, line 21 from top. — After evidence, insert improperly 

 admitted. 



P. 226, line 10 from bottom. — Before locomotive, insert the. 



