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First published in 1952, this book considers the foundation of the science of ballistics in the seventeenth century as a mathematical interpretation based on exact experimental investigation. The emergence of the theory of projectiles in the seventeenth century represented a significant contribution to the application of science in warfare and is a critical example of early science being directed by utilitarian considerations. Dr Hall here examines the science of ballistics with reference to its underlying mathematical principles, placing it in the context of the social and economic background of the seventeenth century, particularly in England.

Being cursed doesn't matter when you already know your fate. As a member of the town's founding family, it made sense for Ella Ever to play a part in making history. The first class of Sunstone University was starting-the first college designed for the supernatural. She was ready to play her part and make all the necessary connections. Tyler Sutton had spent the last few years watching her from afar. The one who held his wolf's attention unlike any other. He'd obsessively moved across the country to be near her. He couldn't stay away any longer. He had to know her. Ella knew who he was, she'd kept a careful eye on him like the stalker she claimed not to be. Nothing could ever come of it though. Not when she was the first of her kind. What happens when a curse stands in the way of fate? ***The Ever Legacy was previously published as part of the Shifters Ever After anthology. It is a standalone novelette set in A.R. Hall's Ethereal Universe. A.R. Hall's Circum Magicae series is recommended before reading this one, but not required.

Welcome to A.R. Hall's Ethereal World. A place where angels and demons have been in control, magic is a gift, and sometimes a deal can be made for a second chance. This set includes: Messages from the Other Side Liar, Liar Her Monster Mate for the Holidays Fated New Year

"My life changed in unexpected ways when I met Kai and Frederick. They were like different sides to the same coin. I wanted to keep it with me forever. I wanted to treasure them like I knew nobody else could after me." When Rosalyn found herself trapped in a never-ending night, she thought she had lost the brothers forever. Frederick and Kai want revenge for the nonchalant response given by the Jones Maritime Collective when the love of their lives was pulled into the sea. As fate has shown over many lives, they're destined to be together. But revenge is bittersweet. Surviving in Chaos is Book Two in the Lovibond Duet. For all potential trigger and content warnings, visit A.R. Hall's website.

Welcome to A.R. Hall's Ethereal World. A place where angels and demons are in control, magic is a gift, and sometimes a deal can be made for a second chance. Don't you know... You can prove something exists, but you can't prove something doesn't exist. This collection includes: Claimed by the Ranger Fated to the Ranger Rejected by the Ranger **These are standalone stories in the world, but recommended to read in the order listed above.