Final answer:
Jennings published the excerpt to raise awareness about the healthcare challenges faced by wives and mothers in poor communities and provide information to improve their health and wellbeing.
Step-by-step explanation:
Jennings published the excerpt alongside a medical guide for wives and mothers in poor communities likely to raise awareness about the conditions and challenges faced by women in those communities. By including the excerpt, Jennings wanted to highlight the importance of accessible healthcare and provide information to help improve the health and wellbeing of women in poverty. It demonstrates his concern for the welfare of this specific demographic and his efforts to address their unique medical needs.