32S 



TRANSIT, OR TRANSIT INSTRUMENT. 





ahe 8 e middle - 



-~ 

 ' 



silMs ir-vdF J^IKA ; s 



dition i. not eSertS. S> " " f d "t*'. but this COB- 



is used for 



scarcely have a laW ' thC Sl/Sf* 1 ^ ircles ' shou ' d 



from two to three feet d iameter Suoh" fiVe . feet ,' with circles of 

 times to supply the nla nf t'l ^ e< l uatorla l " intended at 



phenomenon P o P birvedfcvi s ble on^t 11 ffl ^ ument - "*>** the 



pursue e^ctTy The Tm 

 instruments in order which 



81 



mentlo those 



calculation 



expense of thought and 



equatorially 



observation, 

 good 



h 



"' 



^ ' 



circle only f 



of 





levelled 



with 



wall where thereU not n "n,ul.ted pier, or againrt a 



ufficient rtrenKth Ltce it 

 fromtoptooftom T h e a 

 Chinese P looking fo, nameTy 

 sharper cone. There ' 



- and ? et of 



on one " id 

 Cambridge . 



of a 



s,t 



as 

 r measurin K objects 



, 



while cou 

 obserrers cannot 



greatly theadvantage 'of any 



which do not requuTa U 



divided eye-pi^, Xcwyery 



micrometer are very limitwl 



meaBure; and whereat U prl^d to 



menu of angles, which may eS to i 



Momeler, or equatorial wSTSuL i urnen s e 



they can 



< "! CUBlto meaaure ' 

 ff?? ""trurnent is the 



a 



which we will call the Her,)' i"" of astronomy 



aStS I tsjstt-E^^ 



arstts srjr~- s^^^^tsa.'Ks ^ 



be made to answer A private mit.rn.is. 



^ instrumento on 



in^trumenUinU.e oW^torTthe^ ^T - tr nomical 



. square or oblong room, from 1/to^O feet i n^ 

 namely, north to eouth, and 10 or 14 fo K 

 to 30 incheg wide, cut in the direction f *K 8 ' 



dlre t'on. 



will 



A 



i b coie t do mo8 ,- o - th 



hich may be taken no nd M t S 7 * extra-mendian observations, 

 time, and l arge an equatorial t T P leM T > A 8ma11 traDeit 'or 

 would besuffieielt to Sgfft ^^^l^ tO Set ^ 



AtrSBtSSZS - ^n^Snt to anyone 

 we can scarcely crocdve how I al/ 1 P 8e ^ Whlch ft is a PP 1! d ; and 

 him, that a pereon wouM llm ^ or T4 ^ r thers "Pt af t"- 

 observatory than in a ' SS ^ fc "tronomy in one night in an 

 no worse school" d *ha a t ewhe S' , We ^uld say there was 





to be 1 earned or undeod' eUewhere 



