waging war that are very different (0 here are may new ways those methods used but a generation Aocweapons "have. become "more Aeeaiyeaerial_ and. mechanical warfare have niven us anew conception the nate of wat. Over and above the factors mentioned, the Use of go3 been made and its usage Bas teen probably, more. extensive than wwe have imagined it to be.
Sethe hazortl of 98" poisoning peace time is mainly' restricted. Bivgon monoxide, oak yas, carbon dioxide and. certain sks, associated Sith pectic Industries, warfare the scope fs widened. very" consider ably 2 hone to show you Tater in all Let us tst of all have a clear under standing of what we mean gan when thinking of Hin Wiesnneetion, "The term, g36, 10 this connection is not Tiled to our tual eomeeption of a gas in Lits sual physic sense but it Inelades gases, Mique and even sllds=in fact we ys any. ehemigol substance which fan be dispersed In fine pae>
Hieles. the length of, the time of exposure The former fs'to a very sargo extent dependent upon weather "conditions stich as wind velocity, temperature, the absence of rain. War gases dif. for very considerably in their physic al and in their chemiea prope: ties, that is, as one would expect when we consider their number and. tne Various sources from which they are made and the various methods of their manufacture. So tonight. in order {o belter understand the nature of these gases it is my intention to classify them on the basis of their effect upon the human Body. It is, T think. usual to divide them into four classes, four main groups according to whether their predominut action Is on the lungs, the eyes the nose or the ski It is of interest to note in passing that at home now as a part of our ARP. service, well trained and selected men and women chemists who are very expert in the detection fund the recognition of war gases are ready to meet any possible gas attack, having at hand methods of neutralize ing the effects of these gases. They would be rather different toa body of men that not so very long ago attended a lecture on war gases. 1 was present at the meeting. The lec-lurer passed around in suitable containers many samples of war gases so that we might examine them and we were invited {o smell all of them, noted how some of the folk present put the containers to their noses but there was no suggestion of inhalation taking place and 1 have no doubt in saying that if they had to recognize any War gas, T feel sure that they ould not have done £0 98 the result the experience of smelling the ases of that meeting. Now having ultempted to classify our gases into four groups let us examine them—we will first of all let us consider the lung irritants,
Text read from the printed page and cleaned; old type leaves the occasional error.