Section 42. A foreign society applying for admission to the commonwealth shall, by duly executed instrument filed with the commissioner, as provided in the third paragraph of section 151 of chapter 175, appoint the commissioner as its attorney for the service of process upon it, which shall be served in accordance with said paragraph and section 154 of said chapter 175. All process against a foreign society shall be served at least 30 days before the return day named in the process.