Plate XII.
Nl Vector Diagram for Summer Months, 1919, all Days.
Vector Diagram for Equinoctial Months, 1919, all Days,
Mean Diurnal Horizontal Disturbing Forces for Year 1919 at Christchurch. (Greenwich Hours indicated.) NS. Geographical Meridian. M M Magnetic Meridian.
C—la
Use your Papers Past website account to correct newspaper text.
By creating and using this account you agree to our terms of use.
If you’ve used a RealMe login somewhere else, you can use it here too. If you don’t already have a username and password, just click Log in and you can choose to create one.
Log in