with coordinate system replacement. The weight of the product of two tensors equals the summarized weight of tensors of each factor and convolution of each pair of indexes, con- sisting of the identical upper and lower indexes, does not change the weight of tensor; all pseudo-tensors considered in the paper have weight ± 1; in particular, a magnetic charge is a pseudo-scalar, see below, and, hence, we are not far from the fore-quoted Weinberg statement. The left-hand part of equation (4a) represents by itself a tensor of the third rank, which is antisymmetric in all indexes. Having lowered indexes of this tensor, multiplied by e mlik and performed convolution with respect to three pairs of identical indexes, we obtain equation i.e. in pseudo-tensor F ⋆ $_{A$_{e}$}$, as compared to tensor F$_{A}$$_{e}$ , components of (three-dimensional) vectors of the electrical and magnetic fields change places. So, it would appear reason- able, that the electromagnetic field generated by the current density of magnetic charges { µ$_{b}$ } – j$_{µ}$ could be described using the antisymmetric four-dimensional pseudo-tensor of the second rank, F$_{B}$$_{µ}$ , which is structurally similar to pseudo-tensor F ⋆ A$_{e}$ and described via four-dimensional pseudovector-potential B i µ ≡ ( ψ$_{µ}$, B$_{µ}$ ) in the following way: Then, instead of equations (4)-(6), (11), describing the electromagnetic field (in vac- uum), generated by the current density of magnetic charges j$_{µ}$ , one could use the following F ik B$_{µ}$ ≡ ∂B k µ ∂x$_{i}$ − ∂B i µ ∂x$_{k}$ = ∂ $^{i}$Bk µ − ∂ $^{k}$Bi $_{µ}$. (14) H α e = − F ⋆ 0 α A$_{e}$ ( α = 1 , 2 , 3) ; E 1 e = − F ⋆ 23 A$_{e}$ , E 2 e = − F ⋆ 31 A$_{e}$ , E 3 e = − F ⋆ 12 A$_{e}$ (12) or ∂F ⋆ ml A$_{e}$ ∂x$_{l}$ = 0 . (11) F ⋆ ik A$_{e}$ =    0 − H 1 e − H 2 e − H 3 e H 1 e 0 − E 3 e E 2 e H 2 e E 3 e 0 − E 1 e H 3 e − E 2 e E 1 e 0    F ⋆ A$_{e}$ ik =    0 H 1 e H 2 e H 3 e − H 1 e 0 − E 3 e E 2 e − H 2 e E 3 e 0 − E 1 e − H 3 e − E 2 e E 1 e 0   $^{,}$ (13) 5 The relation between components of pseudo-tensor F ⋆ $_{A$_{e}$}$, which is dual to F$_{A}$$_{e}$ , and compo- nents of (three-dimensional) vectors of electrical field E and magnetic field H is described as