Hearts - Objectivity 107

It's a Valentine's Day special at The Royal Society! Brady wanted hearts, and this is what we found in the archives.. Objectivity on Patreon:   / objectivity   Subscribe to Objectivity: http://bit.ly/Objectivity_Sub Search through the archives at The Royal Society's library page: https://royalsociety.org/collections/ Films by James Hennessy and Brady Haran Royal Society website: http://bit.ly/Royal_Society The Royal Society's own YouTube channel:    / royalsociety   Facebook:   / objectivityvideos   Twitter:   / objectivity_vid   Some keywords: Hearts, Valentine Day, Blue Boy, dissection, child, heart, valves, Edward Stanley, Barts, Bartholomew Hospital, eel, frog, veins, Antonie van Leeuwenhoek, microscope, microscopy, fine structure, heartfelt