CHAPTER IV

The attack of Dec. 1915--The Allies’ good training tells--The casualties analysed--The new element of surprise--Evidences of the use of phosgene--The incident of the bulb--Improved alarms--The Strombos sirens--Accidents to the horns--The Tear Gas Shell--Its chemical analysis--Combated by anti-gas goggles--Tommies scoff at Tear Gas--The Germans make it formidable 62