You ask how did they make the ovum more penetrable. I do not know the name of the medicine. I don't know if it was something Pendleton Tompkins discovered. I know that he found out when I ovulated , and that I had to come to the office as soon as possible and the item was applied to the uterus. I was told to take it easy for a day or so, so I would not expel it. And not to drink or stay up late. He knew about my laying bricks and stacking firewood. That might be the reason for that cautionary advice. After the birth of our son I tried to have a baby 9 months and ten minutes later, and that did not work, so the same application was used. The two babies were 18 months apart. Your Fertility doctor should be able to find out what they used in 1948. I will say a prayer for you and hope something good happens soon. I know your pain.
When our son was four, plus one month we had four children. There might be another reason I got pregnant. S absolutely refused to consider adoption. He finally said yes to having a foster child. I applied and hung curtains in the baby's room and found out I was pregnant. I don't like to talk about that, for Tommy was so proud of my getting pregnant, I don't want to rain on his parade.