Section 50

When, under this Part, any person is required to make a declaration on behalf of himself or of any corpora-tion, or any evidence is required to be produced to the

Registrar, and it is shown to the satisfaction of the Registrar that from any reasonable cause that person is unable to make the declaration, or that the evidence cannot be pro-duced, the Registrar may, on the production of such other evidence, and subject to such terms as he may think fit, dispense with the declaration or evidence.