sentences:  Behr continued to collect and describe insects and their relationship with plants and contributed to a number of academic journals including "Proceedings of the Entomological Society of Philadelphia" and "Transactions of the American Entomological Society".In 1872, the California Pharmaceutical Society was formed and in the same year, the Society appointed Behr professor of botany and he was required to organise excursions "into the country on alternate weeks for the purpose of collecting and studying indigenous plants.