John Conrad Francis De Hatzfeld

• The Case Of The Learned
• Case of the Learned : Represented According to the Merit of the Ill Progress Hitherto Made in Arts and Sciences, Chiefly in Philosophy of Which the Author Gives an Entire New System
• Case of the Learned Represented According to the Merit of the Ill Progress Hitherto Made in Arts and Sciences, ... Shewing, I. the Cause of Gravity and Attraction, ... Ii. What Nature Is, and the Effects It Is Capable of; ... Iii. How and after What M