About this time Basil suffered a great loss in the death of his mother, Greg. Nyss., Vit. Mac. 187, Ep. xxx. and sought solace in a visit to his friend Eusebius at Samosata. Ep. xxxiv.  But the cheering effect of his journey was lessened by the news, which greeted him on his return, that the Arians had succeeded in placing one of their number in the see of Tarsus. Id.   The loss of Silvanus was ere long followed by a death of yet graver moment to the Church.  In the middle of 370 died Eusebius, breathing his last in the arms of Basil. Greg. Naz., Or. xliii.