The private examination of a married woman, duly taken and certified, shall remain valid, although the deed upon which it is taken and certified is not recorded; but no other acknowledgment or proof, duly certified, of a deed or letter of attorney shall make such deed or letter of attorney evidence without its being duly recorded.

Code 1852, § ?1629; Code 1915, § ?3217; Code 1935, § ?3679; 25 Del. C. 1953, § ?155; 70 Del. Laws, c. 186, § ?1;