43 
Note on a New Method of Printing Barometer and 
other Curves. 
By H. C. Russrxt, B.A., F.R.A.S., Government Astronomer. 
[Read before the Royal Society of N.S.W., 5 August, 1880.] 
THE necessity for a convenient and expeditious method of printing 
barometer curves has long been felt by all who have had to publish 
weather maps, and I have therefore no hesitation in publishing 
what to me at least appears to be one method of meeting this 
“a 
is simple enough. The blanks for the curves containing lines 
at 29:4, 29°6, 29°8, 30-0, 30-2, and 30-4, _and these hee by 
' and serves as a printing surface. The whole of this may be done 
in less time than it has taken to describe it. 
The advan obvious :— 
In the first place, it gives a block which can be printed with 
ordinary type, and has therefore a great advantage over the litho- - 
graph system, in which the curve has to be printed after the map 
is aes complete. 
: As soon as the barometers are reduced the printing 
Fourth: By this system the blocks fume be placed together for 
oo peluting, as shown, so that the change in the barometers 
day to day is seen at a glance. 
