Light scattering by an irregular cubical network of dislocations, represented by identical rods, along thex, y, andzdirections is computed by a method which is similar to the Patterson analysis of x‐ray diffraction. It is assumed that the spacingdbetween neighboring dislocations has a Gaussian distribution of width &dgr;d¯about the average spacingd¯, and it is shown that shallow maxima of the scattering intensity exist near the Laue spots of the regular lattice with spacingd¯. From these peaks the dislocation densityd¯−2may be calculated. The width of the peaks and the intensity ratio of scattering maxima and minima is found as a function ofd¯, &dgr;, and the wavelength &lgr;, and it is concluded that the peaks could be experimentally resolved if (&lgr;/&dgr;d¯) >&pgr;. This condition could be satisfied for fairly irregular networks, e.g., &dgr;¯=1/&pgr;, by infrared radiation of wavelength &lgr;≅d¯.