Anchor, to weigh up, [405], [406].
Antiquities, military, [473], [474].
Approaching blind, an, [432].
Arago, M., noticed, [369], [372].
Arithmetical instrument. [512].
Arquebuse, [466]; à Croc, [466]; noticed, [474].
Artificial fountain, [413], [414]; river, [419]; bird, [440]; ring horse, [524].
Ashmole’s Museum at Oxford, [356].
Aubrey, Mr., “a professed virtuoso,” [352].
Authors, old scientific, enumerated, [359].