Section 27 of the Re-establishment and Employment Act 1945-1952 contains provisions giving persons entitled to preference a conditional right to be engaged by an employer in preference to any other person unless the employer has reasonable and substantial cause for not engaging him. A "person entitled to preference" is defined by s. 25 to mean a member of the forces who has been discharged or is awaiting discharge, and a person registered under s. 32 of the Act. Section 32 empowers a Central or Regional Preference Board to register persons not otherwise entitled to the benefits of Division 2 of Part II, where these provisions occur, if, having regard to the service performed by them in relation to the war, the board thinks fit to do so. Section 25 defines "member of the Forces" to include a person who was, at any time during the war commencing on 4th August 1914 engaged on continuous full-time service as a member of the Defence Force or Army Medical Corps Nursing Service, and s. 4 contains a very long definition of "member of the Forces" based upon the war commencing on 3rd September 1939. Both the defendant and Dr. Hamilton Smith come within this definition. Section 27 (2) provides that any person entitled to preference may apply in writing to the employer concerned to be engaged for employment in any position notwithstanding that employment in the position has not been offered to him. Sub-section (3) provides what, in determining whether reasonable and substantial cause exists for not engaging in employment a person entitled to preference, an employer concerned must consider. The provisions of s. 27 which so far have been mentioned relate to the preference of a person entitled to preference when the question is between that person and an applicant or applicants for employment who fall outside the definition. They therefore do not apply to the question whether the Hospital Board was obliged to appoint the defendant and not Dr. Hamilton Smith to the post of radiologist. The provision of s. 27 which purports to deal with such a matter is sub-s. (4). Sub-section (4) provides that in determining as between two or more persons entitled to preference who are applicants for engagement in employment which of those persons shall be engaged in employment the employer shall consider the matters referred to in the preceding sub-section and the comparative qualifications of those persons. The matters referred to in the preceding sub-section are: -