Paper, regarding weather observations from Leiden, Delft [Netherlands] and Rheinsberg [Germany] for 1715 to 1723 by Nicolaus Cruquius The paper consists of two tables: one gives barometric, thermometric and hygrometric readings; the other is a diagrammatic graph for 1723. Subject: Meteorology Read to the Royal Society on 6 February 1723 Published in Philosophical Transactions as 'Observationes accuratœ captœ, anno xvij = xxiij lugduni batavorum, delphis bataviæ, & in pago rhenoburgo. Circa mediam barometri altitudinem, mediam thermometri elevationem, tum & hygrometri varietatem mediam, circa copiam pluviæ, roris, nivis, grandinisque, simul and circa copiam aquæ quæ exhalavit, & altitudinem putealis aquæ in puteo, unde nibil aquæ exhaustum fuit toto anni decursu, de variatione horologii portatilis singulis mensibus, ut certa hœc experimenta servire queant contemplator' 1723