8 THE BLACK HILLS BEETLE. 



noted that a large amount of timber was dying in that vicinity. 

 The specimens sent to the Bureau of Entomology with his letter 

 proved to be the Black Hills species, thus leaving no doubt -regarding 

 the primary enemy and the great danger of an invasion which might 

 soon extend beyond control unless active measures were adopted. 



In the meantime, General Palmer, certain members of the faculty 

 of the Colorado College, and others interested in the protection of the 

 forests in the vicinity of Colorado Springs had inaugurated an active 

 campaign to control the ravages of the beetle, in which the services of 

 Prof. Lawrence Bruner, of the University of Nebraska, were secured 

 to make investigations and give instructions in felling and barking 

 the timber. Two reports were submitted by Professor Bruner to 

 General Palmer, one dated August 2, the other September 19. These 

 reports, together with correspondence and other data, were published 

 in Arboriculture for October, 1905, pages 205-212. 



Under Professor Bruner' s direction between 600 and 800 trees 

 on private lands in the vicinity of Glen Eyrie, Colorado Springs, and 

 adjoining the reserve were felled during August, September, and 

 October, and the bark removed and burned with the tops, to kill the 

 insects with which they were infested. 



On September 16 a full report of the results of explorations by 

 the forest rangers in the Pikes Peak Forest Reserve was submitted to 

 the Chief of the Forest Service by Supervisor Clarke. This included 

 specified descriptions of ranges and sections containing infested 

 timber which General Palmer had requested permission to cut and 

 bark at his own expense, for the further protection of the surrounding 

 public and private forests. Copies of these typewritten reports 

 and statements were submitted by the Acting Forester for consid- 

 eration, and upon consultation with Mr. Gifford Pinchot, Forester, 

 and Mr. Overton W. Price, Associate Forester, it was decided that 

 the writer should proceed at once to make the necessary investiga- 

 tion on which to base recommendations for the consideration of 

 forest officials and others, in further efforts to control the destruc- 

 tive insects in and around the Pikes Peak Reserve. 



This investigation was made October 5 to 13, 1905, and the fol- 

 lowing report submitted : 



REPORT ON FOREST INSECT INVESTIGATIONS IN THE PIKES 

 PEAK FOREST RESERVE. 



OBJECTS. 



The object of this special trip was to investigate the character and 

 extent of depredations by the pine-destroying beetle of the Black 

 Hills (Dendroctonus ponder osae Hopk.) in the pine forests of the Pikes 

 Peak Forest Reserve, in the vicinity of Colorado Springs and Palmer 



