notamment sur les points suivants: insuffisance de la notion de pH, de la composition chimique minérale des eaux, de la température, de l'éclairement, pour expliquer l'écologie des Algues, et aussi les raisons de leurs accidentels développement massifs; importance considérable...
They moved west, ultimately to Eau Claire, Wisconsin, and arrived there no later than the end of 1856. The most likely year they left Pennsylvania was 1855. I have found no sign of them in tax or other records in Pennsylvania after their marriage. Their first son, James H. McGough, ...