He entered the Protestant Church, and in 1663, through the influence of his friend Abraham Heidanus, who had assisted him in his greatest need, he obtained a poorly paid lectureship at the university.
In 1789 he exchanged his chemistry lectureship for that of the theory and practice of physic; and when the medical college, which he had helped to found, was absorbed by the university of Pennsylvania in 1791 he became professor of the institutes of medicine and of clinical practice, succeeding in 1796 to the chair of the theory and practice of medicine.
A lectureship on political economy, to exist for ten years, was founded in commemoration of him, M'Culloch being chosen to fill it.
In 1851 an English and in 1852 an Anglo-Saxon lectureship were established.
The possession of the doctorate is a sine qua non for eligibility to a university chair, and to a lectureship in the university of Paris.
In 1622 Camden carried out a plan to found a history lectureship at Oxford.
Appointed to a lectureship at the Ecole Normale Superieure in February 1870, to a professorship at the Paris faculty of letters in 1875, and to the chair of medieval history created for him at the Sorbonne in 1878, he applied himself to the study of the political institutions of ancient France.
The senate, in return, settled him for life in his lectureship at Padua and doubled his salary, which was previously 500 florins and which then became treble that which any of his predecessors had enjoyed.
By his will he devoted his personal property to found a lectureship on foreign missions on the model of the Bampton Lectures.
In 1658, through the kind offices of his friend John Evelyn, Taylor was offered a lectureship in Lisburn, Ireland, by Edward Conway, second Viscount Conway.