In 1849 he returned to Marseilles, though he revisited Egypt in 1856.
Among these studies is a review done by the Institute of Medicine, which revisited published and unpublished studies on possible biological factors that could indicate that vaccinations may cause autism.
After this he revisited Syria and Asia Minor, and crossed the Black sea, the desert from Astrakhan to Bokhara, and the Hindu Kush.
Carteret discovered the Charlotte and Gloucester Islands, and Pitcairn Island on the 2nd of July 1767; revisited the Santa Cruz group, which was discovered by Mendafia and Quiros; and discovered the strait separating New Britain from New Ireland.
But he first revisited India and then, returning to Malacca, took ship for Japan, accompanied by Yajiro, now known as Paul of the Holy Faith.
