It became then desirable to make the head of steel for sake of uniformity of material, and the advantages of steel in lightness and rigidity for the tube then became evident.
Pyrites is largely worked for sake of the sulphur which it contains, and in many cases it has displaced brimstone in the manufacture of sulphuric acid.
The order was subsequently revoked but it is included here for sake of completeness.
While historically, both men and women - but especially women - wore suits that covered more of the body for sake of modesty, they now do so for improved performance.
