To give you an idea of what's in there, you can look at the article published by Edmund Halley in 1705 describing the comet that was named after him: "Astronomiae Cometicae Synopsis." You can't read it unless you know Latin, but, hey!, it's pretty darn cool.
Some other titles in there:
- "The Description of a Monstrous Child, Born Friday the 29th. of February 1684. at a Village Called Heisagger, Distant about 4 English Miles from Hattersleben, a Town in South- Jutland, under the King of Denmark's Dominion, Communicated by Mr. Christopher Krahe, a Member of the Ecclesiastical Consistory and Provost of all the Churches Belonging to the Said Diocess"
- "Two Letters Formerly Written to Mr. H. O, by Dr. M.L. Ist. concerning Some Very Aged Persons in the North of England. 2d. about the Projection of the Threads of Spiders, of Bees Breeding in Cases Made of Leaves, of a Viviparous Fly, and of Great Numbers of Maggots Observed at the Time of the Plague, A. D. 1666"
- "Of a Place in England, Where, without Petrifying Water, Wood is Turned into Stone"