“ ‘ Mr. Boffin presents his compliments to Mr. John Rokesmith, and begs to say that he has decided on giving Mr. John Rokesmith a trial in the capacity he desires to fill. Mr. Boffin takes Mr. John Rokesmith at his word, in postponing to some indefinite period, the consideration of salary. It is quite understood that Mr. Boffin is in no way committed on that point. Mr. Boffin has merely to add, that he relies on Mr. John Rokesmith’s assurance that he will be faithful and serviceable. Mr. John Rokesmith will please enter on his duties immediately.’ ”