t »7 3 
V. New Observations in further Proof qf the mountainous Ine- 
qualities, Rotation, Atmosphere, and Twilight, of the Planet 
Venus. By John Jerome Schroeter, Esq. Communicated by 
George Best, Esq. F. R. S. 
( Translated from the German.) 
Read February 19, 1795. 
PREFACE. 
Although it is a satisfaction to me, that Dr. He^ischel last 
year found my discovery of the morning and evening twilight 
of Venus's atmosphere to be confirmed, as I could not hope to 
have obtained such an important confirmation so early, consi- 
dering the excellent telescopes required, and that a favourable 
opportunity for such observations occurs but rarely ; yet the 
paper on the Planet Venus , which this great observer has in- 
serted in the Philosophical Transactions for 1793, contains un- 
reserved assertions, which may be easily injurious to the truth, 
for the very reason that they have truth for their object, and 
yet rest on no sufficient foundation. 
Openness, without reserve or indirect views, must guide the 
spirit of observation in the true inquirer into nature, and be his 
sole object. To this pure source alone can I ascribe what is 
said in the abovementioned paper, so as to reconcile it to the 
friendly sentiments which the author has always hitherto ex- 
pressed toward me, and which I hold, extremely precious ; 
t 
