That all acts of the Michigan state horticultural society since its organization under and by virtue of Act No. 125 of the laws of Michigan of 1871, being “An act to provide for the incorporation of societies for the promotion of pomology, horticulture and the kindred sciences and arts in the state of Michigan,” with reference to acquiring property, and all things that said society may have done in and about its business, is hereby declared to be as legal and valid, as though its amended articles of association, by which the name of said society was changed had been regularly and properly filed with the secretary of state in accordance with the law.