Between chemotherapy infusions the technicians religiously took blood samples from me like overeager vampire bats. The blood draws had been carried out to find out if my purple- and white-blood-cell counts were too low for me to be treated. Because my blood was being checked so often, my good arm (the one without the lymph nodes removed from the armpit) was feeling the consequences of these extra pokes in addition to the I.V. pricks. Fortunately, my veins did not collapse.
From the moment folks encountered fire it was actually used for all types of functions. Hearth has been used to …