980 SEC. 18. BIOLOGY. 



or to be taken out and held up by the stem for demonstration. Curators of 

 museums may remove the cover and examine the mounting. The specimen 

 is a preparation of the human pyloric " valve." 



3823a. Specimens of Linnaeus's MS. 



The Linncean Society. 



" Iter Dalekarlicum." a MS. journal of a tour made at the suggestion of 

 Governor Reuterholm, in the year 1734, through the provinces of East and 

 West Dalecarlia, by Linnaous himself, accompanied by several students from 

 the University of Upsala, who were devoted to the study of natural history, 

 each student undertaking to record daily his observations on the particular 

 branch assigned to him. 



The journal, which is chiefly in Swedish, and does not seem ever to have 

 been published, is illustrated by pen and ink sketches, and accompanied by 

 one engraved and two MS. maps of the district traversed. 



3823b. Specimens from Linnseus's Collections. 



The Linncean Society. 



a. Zoological. 



1. My a margaritifera, and portion of shell with artificial pearls. 



In his letter to Haller, dated Upsal, Sept. 13, 1748, Linnaeus writes, "At 

 " length I have ascertained the manner in which pearls originate and grow 

 " in shells,* and I am able to produce, in any mother-o'-pearl shell that 

 " can be held in the hand, in the course of five or six years, a pearl as large 

 " as the seed of common vetch." 



2. Testudo pusilla, L., native of the Cape of Good Hope. 

 Both specimens named in Lirmseus's own hand. 



3. Scomber Chrysurus, native of Carolina. 



* " For this discovery the illustrious author was splendidly rewarded by 

 " the States of the Kingdom." Haller. Specimens of pearls so produced 

 by art in the Mi/a margaritifera are in the Linnsean Cabinet. 



" The shell appears to have been pierced by flexible wires, the ends of 

 "which perhaps remain therein." (Smith's Selection of the Correspondence 

 of Linnaeus, II, p. 428.) 



In his Memoir of Linnaeus, in Rees's Cyclopaedia, Sir James Smith, after 

 mentioning that his patent of nobility was confirmed by the Diet in 1762, goes 

 on to state that that august body honoured him with a still more solid reward, 

 upwards of 520/. sterling, for his discovery of the art of producing pearls in 

 the river mussel by wounding the shells ; but the practice does not seem to 

 have been prosecuted to any great extent. 



b. Botanical. 



(All glued on paper, poisoned to protect them from insects, and 

 named in Linn anus's own hand.) 



1. Linncea borealis, Gron. Named in honour of Linnr-eup, by 

 his pupil Gronovius. 



2. Sibthorpia Europcsa, Linn. 



3. Browallia dcmissa, Linn. 



4. Hcbenstretia capitata, Thunb. 



