Ree. April 2?th 

 Ans. May 15 



Hannover, Jan. k 9 lSk? 



Esteemed ColleagueJ 



Merchant Carstens has called to my attention that you are occupied with 

 Zoology and namely with entomology. I possess a fairly large insect collection, 

 containing approximately 85OO species of insects. My purpose in writing is to offer 

 you an exchange of insects. If you are interested in this, a fitting opportunity 

 would be Mr. Carsten 1 s intended trip this Coming summer; whereby you could have a 

 shipment brought to rae and f on his return trip, I could have a equivalent brought to 

 you. If you could not speeify all matters because of insufficient resources, I would 

 be glad to take care of it. If you would label the things which are to be sent with 

 numbers, which correspond with the things in your collection, then that would be 

 helpful to me in establishing an inventory. Most agreeable to me would be insects, 

 which moreover are less fragile than the other Orders of insects. Also sand 



and sweet-water are easy to ship, and an exchange in these would also be 



agreeable to me. With overseas shipments which I have reeeived, the insects were 

 also not impaled but, after they were killed in alcohol or hot water, they were 

 packed in layers between cotton; whereby many can be shipped close together. Asking 

 you to please forgive the brashness in my turning to you, I am 

 Your most devoted, 



F. Muehlenpfordt, M. D. 



(Lehrer) Prof. of Zoology and Botany at the 

 Polytechnical School of Hannover 



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