Please note: this post may contain affiliate links for products I recommend. If you make a purchase through these links, at no additional cost to you, I will earn a small commission. As an Amazon Associate I earn from qualifying purchases. It's time to review what I've read lately, and this week it's the next book in Elizabeth Everett's The Secret Scientists of London series, A Perfect Equation. We catch up with our daring Victorian lady scientists at the Athena Retreat where we find ...