“ I have (saith he) sometimes thought upon the Changes, which 'tis likely, the supposed Inhabitants of the Moon might discover in our Earth, to see, whither reciprocally I could observe any such in the Moon. For example, methinks, that the Earth would to the people of the Moon appear to have a different face in the several seasons of the year; and to have another appearance in Winter, when there is almost nothing green in a very great part of the Earth ”

“ And men have made such works, as have produced Changes great enough to be perceived. In many places also are Vulcans, that seem big enough to be distinguish't, especially in the shadow: And when Fire lights upon Forrests of great extent, or upon Towns, it can hardly be doubted, but these Luminous Objects would appear either in an Eclipse of the Earth, or when such parts of the Earth are not illuminated by the Sun. But yet, I know no man, who hath observed such things in the Moon ”

“ And if the Mapps of the Moon of Hevelius, Divini, and Riccioli, are exact, I can say, that I have seen there some places considerable enough, where they put parts that are clear, whereas I there see dark ones. 'Tis true that if there be Seas in the Moon, it can hardly fall out otherwise, than it doth upon our Earth, where Alluvium's are made in some places, and the Sea gains upon the Land in others. I say, if those Spots we fee in the Moon, are Seas, as most believe them to be ”

“ Me thinks, I say, that these changes are considerable enough in the force of the reflexions of Light to be observed, since we see so many differences of Lights in the Moon. We have Rivers considerable enough to be seen, and they enter far enough into the Land, and have a bredth capable to be observed. There are Fluxes in certain places, that reach into large Countries, enough to make there some apparent change; & in some of our Seas there float sometimes such bulky masses of Ice, that are far greater, than the Objects, which we are assured, we can see in the Moon. ”

“ To perform (saith he) with a lesser Object-glass the effect of a great Telescope, we must find out a way to make such an Object-glass to receive as many Rayes as one will without their being sensibly distant from one another; to the end, that by applying to it stronger Eye-glass, there may be still Beams enough to see the Object, an to obliterate the small specks and imperfections of the Eye-glass. ”

“ An Experiment of a way of preparing a Liquor, that shall sink into, and colour the whole Body of Marble, causing a Picture, drawn on a surface, to appear also in the inmost parts of the Stone. This Experiment, having been hinted at in the next foregoing Papers, out of the Mundus Subterraneus of Athanasius Kircher, and several Curious Persons, who either have not the leisure to read Voluminous Authors, or are not readily skilled on that Learned Tongue wherein the said Book is written, being very desirous to have it transferred hither, it was thought fit to comply with their desire herein. ”

“ In the mean time there are not wanting Experienced Men that scruple the Effect, but yet are far from pronouncing any thing positively against it, so that they doe not discourage any that have conveniencies, from trying. ”

“ This it is (so he goes on) which all Curious men, that have good Telescopes, ought well to attend; and I doubt not; but, if we had a very particular Map of the Moon, as I had designed to make one with a Topography, as it were, of all the considerable places therein, that We or our Posterity would find some changes in Her. ”

“ An Account of an odd Spring in Westphalia, together with an Information touching Salt-Springs and the straining of Salt-water. An observing Gentleman did lately write out of Germany, that in Westphalia in the Diocess of Paderborn, is a Spring, which looses it self twice in 24. houres; coming always after 6 houres, back again with a great noise, and so forcibly, as to drive 3 Mills not far from its source. The Inhabitants call it the Bolderborn, as if you should say, the Boysterous Spring. ”

“ Some whereof, though they may conceive, that liquors thus injected into Veines without preparation and digestion, will make odde, commotions in the Blood, disturb Nature, and cause strange Symptoms in the Body, yet they have other thoughts of Liquors, that are prepared of such things, as have passed the Digestion of the Stomach ”

“ Hook, for communicating his Contrivance of making, with a Glass of a Sphere of 20 or 40 foot diameter, a Telescope drawing several hundred foot; and his offer of recompensing that Secret with another, teaching To measure with a Telescope the Distances of Objects upon the Earth. ”