i 7 2 THE NEW WORLD OF SCIENCE 



ally unsatisfactory nature of this form of warfare they were 

 never used. 



A great deal of work was done on the subject of incendiary 

 drop bombs, shell, and darts. Of the drop bombs, a final 

 successful type was a 100 Ib. bomb, containing thermit and solid 

 oil. Two types of darts were made. One was a non-pene- 

 trating type, weighing 5.6 oz. The other weighed 3 Ibs., and 

 had a penetrating head. Large numbers of each type were 

 intended to be dropped from an airplane at once. The incen- 

 diary shell contained about 3 ft. of strands of chlorated jute 

 rope. 



Signal lights, flares and rockets were developed to a marked 

 degree of perfection. 



New types of Stokes mortars, Liven's projectiles and other 

 ordnance material also were subjects of investigation on the 

 part of the Chemical Warfare Service. 



One interesting development had to do with new work on 

 the French explosive, anilite. As used by the French, this 

 explosive consists of two materials, kept in separate compart- 

 ments in a two-compartment bomb. At the instant of fire, the 

 two materials mix and explode. The mixture was finally made 

 stable enough so that the two materials could be kept in a one- 

 compartment bomb. 



PERMANENT RESULTS OF THE WORK 



In closing, we may quote Colonel G. A. Burrell : 

 " Out of the war, with its tremendous waste and suffering, 

 have come many important and permanent things for humanity 

 at large. This is especially true in this country, where the 

 resources of the nation were not taxed to exhaustion or any- 

 where near it. Lessons have been taught in the aeroplane, 

 transportation, food, and other services that will produce last- 

 ing and revolutionizing effects. The same is true of the 

 Chemical Warfare Service. It is inconceivable that this service 

 with a personnel of thousands of people, and comprising much 

 of the best talent of the country, should not leave its imprint on 



