"Sec. 34. Corporations cannot register. � The practice of architecture is a professional service, admission to which shall be determined upon the basis of individual, personal qualifications. No firm, company, partnership, association or corporation may be registered or licensed as such for the practice of architecture: Provided, however, That persons properly registered and licensed as architects may, among themselves or with a person or persons properly registered and licensed as civil engineers, form, and obtain registration of, a firm, partnership or association using the term "Architects" or "Architects and Engineers," but, nobody shall be a member or partner of such firm, partnership or association unless he is a duly registered and licensed architect or civil engineer, and the members who are architects shall only render work and services proper for an architect as defined in this Act, and members who are civil engineers shall also only render work and services which are proper for a civil engineer as defined under the law regulating the practice of civil engineering; individual members of such firm, partnership or association shall be responsible for their respective acts."