MECHANICS OF PRESSURE SYSTEMS 
Extrathoptcaly Cyclones! bylifs BiCTRIZES i 22 cs «pita sstge a lieicis) to egeby Aee i ihe el ale hele a ee Pere ol soa SVU 
The Aerology of Extratropical Disturbances by E. Palmén...............0. 000000 cc ee ees 599 
PANEL SVCLOL1C SIR OIy MELT see LE LCX LCT arn eee a a ate Hs Ty Urey cs Se ae ree aca ess te rysan ly 4) Au ea eee Rent 621 
Mechanismpotsbressure Change bynjaimes Mav Austzm. «ye ee eee eee eee eee ee eee sees 630 
Large-Scale Vertical Velocity and Divergence by H. A. Panofsky...............2. 2000020 e eee 639 
sinew ristabilitypleineuny resi hele SNM neces cue: ce). Sie cent eme ve aenets Srdis leis /oin ele siGaels ol alsahaysns Sisko se aye 647 
