injlituendo diffeUUnei^ catellarum imprimis valdb juvenum^ 
ad rei certitudinem major em, 
Seaventhly, from G ermanj ^re infotrnd ^ that in the 
Univcrficy of Jena in Vpper Saxony^ one Mr. Weighelins^ 
Profeffor of the Mathcm^cicks there, hath invented feve* 
ral ingenious Inftruments and Engins ^ As firft, an Aftro- 
nomical one^ -whichhtCdXh AflrodiBtcumy by the means 
whereof very many perfons fliall be able at one and the 
fame time to beholdone and the fame Star. Secondly, 
Axi exceeding great 6lobe of the World^ capable of ten per- 
fons to fit in it all at once, and to behold the motions of 
theceleftial Bodies, C^r. Thirdly, knedd Bridge, or a kind 
of Stairs, by which a man (hail defcend and yet really be 
raifed upward, and going as 'twere upon a plain fhall,from 
a lower» by gently fubfiding, arrive to an upper Aovy^^c^ 
Ofthefe and other particulars 5 faid to be in part already 
done, andinpartdefign'd by the faid Mathematician, we 
hope we fliall in time obtain a more fatisfa^lory ac* 
compt* 
Th E%trali of a Letter written by Mr. John Ray to the Pub» 
li/herfromMidhtou,July 1671. eoncerning Sfontanems 
Generation '^ , As alfg fome InfeSs (meiling of Musk^ 
sir, 
AStothe particulars contained in your Letter, I well re* 
member, that Mr* Ufier did, a good while fiiice, 
writfeme his opinion concerning Vegetable Excrejcenciesi 
and the Infefts therein bred and harboured 5 but the Let- 
ter containing that Difcourfe I have not at prefeocby me, 
it being fent away in a handle of other Letters and papers 
into£/^A?. I have therefore writ- 
ten to him to defire him,to take the ^ * '^^ ^^^^'^ ^ % 
1 . /X I £• ^ /1 1 • this ^ecompt in the Trmm*t 
pams himlelt to lend you his ahns^fthnext MomK 
thoughts upon that fubjedi* ^ 
Whether there be any Sponiamous or Anomalous Gene'- 
ra^io?2 of Animals , as hath been the cooflant opinion of 
Natqralifts heretofore, Lthink there is good reafon to 
queftion^ It feenis to me at prefent moft probable, that 
there 
