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 full recitation of the "Centigrade 232" collection. Other releases comprised recitations of the unpublished "Earth Ritual" poems collection and two music tapes, "Blueprints from the Cellar" Volumes 1 and 2, which contained home demos of songs, some of which would be released in completed form on the albums "Freq" and "Test Tube Conceived". Calvert's "Centigrade 232" tape recitation was first used with music on the second Spirits Burning album "Reflections in a Radio Shower", released in 2001. Don Falcone took the original recording of Calvert reading his poem "Centigrade 232" and integrated it into the track "Drive-By Poetry". Lines from