278 Scientific Intelligence. 
They enable us to dispense with the different refrangibilities of the rays 
of light, as taught by Newton. paid 
They help to explain many of the phenomena of what is called the 
polarization of light. al 
They give a new explanation of prismatic refraction, and explain ina 
ena. — 
= 
é 
plain and simple manner many very interesting natura ‘- 
Startling, he said, as these conclusions are to those who are conversant — 
with the subject of light, he thought he was perfectly warranted in draw 
ing them from his experiments. The general process of reasoning ¢ 
not, however, be given in a short abstract.— Ordinary Meeting, Oct. 
1859, Manchester Literary and Phil. Society. 
1. Vegetable Parchment,—Papyrine—The interesting substance 
tained in 1846 by Poumaréde and L. Figuier (Comptes Rendus, xxiii, 9} 
, Bigg) ae dere ic been e a 
ring a few seconds in oil-of-vitriol which has vohing it in & dilute sa 
used 
: : : too long, nor 
acid bath. The paper must not be ean a 5° (C)=[59° 
ble parchment it undergoes no appreciable increase in welg® 
%* Should not this term, which has an undoubted right of priority, 
the scientific name of the substance !—[F. #.S.] 
