Whakaotihia te rerenga e whai ake nei: I te ngoikore o te hauora, i noho a Jastrow, me tona whanau, i te puna me te raumati o te tau 1862 i Breslau, Berlin, me Dresden; i te ngahuru i whakaae ia ki te karanga mai i te hapori Hurai i Mannheim. I etahi wiki i muri mai, i te marama o Noema, 1862, ka whakakorea te ota mo tana peia, a ka whai waahi ki te tautohetohe i waenga i te whakaminenga i Warsaw (i haere tonu tana utu tae noa ki tana haerenga ki Mannheim) me tera o Mannheim; i te tono a Jastrow i tukuna ia e te whakamutunga. He torutoru marama i muri i tona hokinga ki Warsaw (Hanuere 1863) te
ka pakaru te hurihanga. I a ia e haere ana, a i a Jastrow e haere ana, i whakakorea tana uruwhenua Prussian, a kaore ia i whakaaetia kia hoki ki Warsaw.