THE PINE INVESTIGATION. 301 



Schaufuss, of the Museum of Meissen (Kingdom of Saxony) and transfer 

 the request to him. I believe he will be the one to give best advice. He 

 possesses abundant insect collectors throughout the country and would 

 also make entomolgical exchanges with you. * * * 



* * * How the second of your bark beetles ( (D. frontalis) may be sup- 

 pressed I do not know, because the life history of this insect is not entirely 

 known to me. I possess, all told, only two specimens of this beetle, one, 

 if I mistake not, from yoii and one from the lately deceased Dr. C. A. Don 

 of Stitten. 



In conclusion, because of my sickness, I once more ask an apology for 

 this delayed answer. 



Now farewell, with highest esteem besides, 



Your most devoted 



ElCHHOPF. 



Upon receipt of Mr. EickhhofPs letter I at once wrote to Di- 

 rector Schaufuss as follows : 



Oberforester W. Eichhoff, of Strassburg, has referred me to you in a 

 recent letter, saying that you would be one who could help me in a con- 

 templated experiment in introduciug some live European insects to this 

 country. * * * As Entomologist of this station, I am anxious to try 

 the experiment of importing some live-specimens of Clerus formicarius and 

 such other Clerids which in your judgment might feed upon D.frontalis. 



If you will kindly aid in the experiment, I will give you full credit for 

 your share of the transaction and pay such reasonable expenses as may be 

 necessary in obtaining and sending the specimens. If you are willing to do 

 so, please answer yes, or no by cablegram the following questions: 



1st. Do you know of any scolytid eating insect in Germany, France or 

 Norway which could be obtained in numbers in the month of August? 



2d. Could you undertake to collect and send me live adults or pupae, 

 I paying cost. 



3d. I can and will, if necessary, visit Europe for the purpose of collect- 

 ing these live Clerids, etc. .Will it be possible for you to direct me where 

 I can collect them in August?" 



In reply to this letter I received a cablegram stating, U 2d, 

 YES," which indicated to me that the desired insects were to be 

 had, and realizing that if they were te be introduced into the 

 forests here during the fall of 1892, there was no time for nego- 

 tiating in Germany by correspondence, it was decided that in 

 order to secure as many examples as possible and insure the safe 

 importation, it would be necessary for me to personally super* 

 intend the collecting and shipping of the -first lot, and to en- 

 gage collections and give instructions with reference to subse- 

 quent shipments, whereupon the following letter was addressed 

 to the parties who had expressed a willingness to aid in the ven- 

 ture: 



LETTER TO TIMBER COMPANIES. 



"I have just received .a cablegram from my correspondent Entomolo- 

 gist in Saxony indicating that the desired beneficial species of insects 

 which we wish to import for the purpose mentioned in our previous cor- 



