In one of the flashbacks, Clark recalls Aunt Georgiana teaching him when he was a boy working on Uncle Howard's farm, What subjects did she teach him?

Aunt Georgiana taught Clark Latin, Music, and English/Literature.

Explanation:

Georgiana and Clark are characters in the short story "A Wagner Matinée " by Willa Sibert Cather. When Clark was a young boy, he lived for some time with his uncle and aunt on a farm. Aunt Georgiana is a kind woman who taught Clark while he lived there. Georgiana herself, before eloping and starting this rough, almost excruciating life in the countryside, was a music teacher with better education than many musicians of her time. She gave up her passion to marry Clark's uncle.

In one of the flashbacks, Clark speaks briefly of the subjects she taught him:

[...] would often stand until midnight at her ironing-board, hearing me at the kitchen table beside her recite Latin declensions and conjugations, and gently shaking me when my drowsy head sank down over a page of irregular verbs. It was to her, at her ironing or mending, that I read my first Shakespeare; and her old text-book of mythology was the first that ever came into my empty hands. She taught me my scales and exercises, too, on the little parlor organ which her husband had bought her after fifteen years, during which she had not so much as seen any instrument except an accordion, that belonged to one of the Norwegian farm-hands. She would sit beside me by the hour, darning and counting, while I struggled with the "Harmonious Blacksmith".

many were disgusted, nauseated and shook their heads with disapproval upon finding out about the recycling of water process. however, they do not seem to understand that this process actually saves water.

although individuals may argue that it is unhealthy, and or unsafe to drink water that is "from toilet to tap" , the water is 100% safe to drink and involves forcing the water across a membrane, which "removes   any impurities, including viruses, pharmaceuticals and dissolved minerals" , according to paul rozin, a psychology professor who studies revulsion.

i agree that that the thought of drinking water that once ran through someones kitchen sink isn't quite appealing, but recycled wastewater is safe to drink. it also saves water. "the city produces nine million gallons a day" claims russell schreiber, the city’s director of public works.

recycled waste water has absolutely no health concerns whatsoever. when wastewater goes into a system, it's absorbed back into the ground. thus, it goes into a sewer system, then goes through a treatment process that removes contaminants before being released. nonetheless, there is no problem in drinking water that has been recycled.

"in drought-ed california, there are six state agencies that use wastewater that comes from an intellectual property source," according to the university of california, riverside. studies show that this water is completely safe to drink, however, it still doesn't mean people are going to happily pour it in a water glass.

researchers hope it "may make consumers more amenable to drinking recycled wastewater," extraordinarily, women who have a higher "disgust reaction" and make most consumer purchasing decisions.