216 



DR THOMAS MUIR ON THE 



A H G 



a 

 A 



h 

 H 



9 



V -fJ. 



G 



-i A 



H 



B 



F 



M —A 



G 



F 



C 



A 



H G 



a /(- 



9 



. 



V —fj. 



A 2 fx\ 



vX 



'V 



. A 



X/U. //" 



VfJL 



M 



-A . 



Ay /UJ^ 







V 



+ 

 -I 



A H G 



+ 



V — fX 



/u — A 



and taking these three terms in order we have the first 



A H G a h g 





A ix v A 



IX v 





9 f o h 



b f 



A 



H v A 



IX V 



9 



/ c a 



h g 



A 



fX V \ fi V 





h b f a h g 



v — ix A H G 

 =(i/H- M G)D; 



+ + 0, 



the second 



A H G 



Xa ixh vg 



v — fX 



AAA 



-v . A 



)X fX IX 



ix —A . 



V V V 



A H G 



Xa 



ixh 



= 0; 



and the third, if o> be used for a\ 2 + bp 1 + cv 2 + 2fixv + 2gA + 2hk(A 



A H 



G 



-w + X 



fj. 



V- 



a h g 



X ix v 

 /" — % — ^ — w + M 



■k b f 



X fX V 



a h g 



X a v 



v j 



a h g 



h b f 

 X ix v 



— co + v 



\ 



M 



V 



c 



9 



/ 



X 



M 



V 



c 



'9 



/ 



X 



M 



V 



c 



9 



/ 



II 



A ix v 



G- 



= -coD + 



a h g h b f g j 



= -wD + 



1 

 1 



1 



H G 



Xa 

 ixh 



vg 



a h 



9 



h b 



f 



9 f 



c 



(Xa + ixh + vg), 



= - wD + AD(A« + ixh + v g) , 



