In this attempt at reconstructing temperatures during the Little Ice Age on the basis of dendrochronology, the author used ten‐year running means for tree ring growth in the Ary‐Mas forest island in the Khatanga Basin and also a generalized tree‐ring series for the entire length of the treeline from the Kola Peninsula to Chukotka. These curves are keyed to temperature curves from Khatanga and Turukhansk. Her data would suggest that the mean annual air temperature at the culmination of the Little Ice Age in the 17th century was 0.8° ± 0.2° lower than at present.