Reed water tube boiler straight tubes through which water and steam circulated more freely, it was considered by some contemporary writers on the subject such as Leslie S. Robertson as "behind" in its circulation because of the absence of down-comers. Whereas the Yarrow boilers fitted to the armoured cruiser of 1905 evaporated 11.664 pounds (5.291 kg) of water per pound (454 g) of coal at 100 degrees centigrade (212 degrees Fahrenheit) with natural draught, by the same measure a Reed boiler as fitted to the torpedo boat destroyer of 1896 evaporated 12 pounds (5.44 kg). An advantage of the Yarrow boiler was in weight:
Centigrade 232 spell with Hawkwind from 1976 that he had become more recognised as being a singer and front-man of a rock band, but he continued actively writing poems and plays during this time. In 1977 a collection of his poems were compiled and published by Quasar books, the title being (allegedly) the temperature at which writing paper burns "signifying the writer destroying his rough drafts". This is an allusion to the Ray Bradbury novel "Fahrenheit 451" and possibly the film thereof, 451°F being equivalent to 232 Centigrade. Some of the poems are pieces he had performed with Hawkwind during the "Space