In it , Linnaeus recounted the temperatures inside the orangery at the Botanical Garden of Uppsala University : Since the 19th century , the scientific and thermometry communities worldwide referred to this scale as the centigrade scale .
In it , Linnaeus reported the temperatures inside the orangery at the Botanical Garden of Uppsala University : '' ... since the caldarium ( the hot part of the greenhouse ) by the angle of the windows , merely from the rays of the sun , obtains such heat that the thermometer often reaches 30 degrees , although the keen gardener usually takes care not to let it rise to more than 20 to 25 degrees , and in winter not under 15 degrees ... '' For the next 204 years , the scientific and thermometry communities worldwide called this scale the `` centigrade scale . ''