We present the calculated and the measured data on charge transfer between two closely spaced point contacts inserted in a magnetic field parallel to the trigonal face of a bismuth single crystal. The problem has been analyzed with the geometry of a transverse electron focusing (TEF) experiment, and different relations between the contact-to-contact distance L and the mean free path of electrons l. The TEF method permits us to observe the subsurface skin layer formation beginning with very low fields and it allows control of the specular reflectivity of electrons from the metal boundary. If L < l, electrons moving along the surface generate the collector signal for H L proportional to H. For large contact-to-contact separations (L > l), the charge transfer is mainly accomplished through a diffuse motion of electrons from contact to contact through the bulk of the sample.