Sentence:  As most of the county was covered with forest, it was necessary to clear the land of trees, in order to make way for farming operations. Clearing of the land was accomplished by means of <WSD>logrollings</WSD>, a practice whereby logs were heaped into great piles and burned. Much valuable timber was destroyed in that manner, but, as no markets existed for timber, it was the most expedient method of ridding the land of trees. <WSD>Logrollings</WSD> continued until probably 50 years ago, when markets for forest products arose and timber began to be sawed and sold. 
Meaning of the word marked with <WSD> tags:  The rolling of logs from one place to another; an occasion when people meet to help each other roll logs.