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Show Arsenal of Health While we are all conscious of the gigantic tvork going on in our steel mills and factories to produce the equipment that will keep America secure against outside attack, feiv of us know about the total tear that is going on to crush 'the enemy within DISEASE. In hundreds of laboratories men and women labor to crush him with vaccines, serums and toxins. These photos show what goes on in the William Hallock Park laboratory in New York. f , ! r ! ""'if t X " 3 L s& - . " F A step in the concentration and refinement of crude serums. Harmful substances are removed by precipitation with chemicals and collected by filtration. I if' & a I y --c l Unsung hero. A sterile canula has been inserted into the horse's jugular. Blood is drawn into the large tube and allowed to clot. This technician is operating the apparatus in ivhich final sterilization steri-lization and filtration of biological biolog-ical products is carried out. Wearing aseptic masks, caps and gowns, women technicians are working on sterile cubicles, filling the vials with anti-rabic vaccine. This product has saved the lives of many bitten by rabid animals. 1 ' v'os '-C 'ill 1 " a v"-v i 'hf4v ( -diMtI i i If 1 As in every other step of the preparation of sera, vaccines and anti-toxins, extraordinary precautions are taken in bottling the products. A glass window covers most of the filling operation to prevent air contamination. A small quantity of blood is taken from car vein of rabbit. From tliis blood a q::ant:ty of anti-pneumccocc'.c scrum is extracted. |