The author has requested that the following corrections be brought to the attention of the readers. Equation (1) should read: 
A c ---- 2D 2 Ofo'~K]txm( 1 -~)l/2do ~ E ~P (1)
Equation ( 4) should read: 

(KI"~ 2 1

Equation ( 7) should read: 
f Jp = OA/O(crack area)Ip dP (4) (7) 
The fourth line of page R107 should read: rL = ( l -a ) 
Fo) 
Int Journ of Fracture 67 (1994) 

R4 9 CORRIGENDUM "Some Results for J-Integral Estimation Formula of a Straight-through Cracked Three-point Bend Round Beam," Wang Qizhi, International Journal of Fracture 64 (1993) R105-R109.