. Bulletin. Natural history; Natural history. Fig. 31.— Berlese funnels in operation. Forest litter is placed in funnels and then warmed and dried by heat to drive insects down into bottles of preservative (70-percent alcohol) below. Photo by Wilmer Fig. Samples of insects, including thrips, recovered from forest litter by the Berlese funnel method. Photo by Wilmer Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
. Bulletin. Natural history; Natural history. Fig. 31.— Berlese funnels in operation. Forest litter is placed in funnels and then warmed and dried by heat to drive insects down into bottles of preservative (70-percent alcohol) below. Photo by Wilmer Fig. Samples of insects, including thrips, recovered from forest litter by the Berlese funnel method. Photo by Wilmer Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
Size: 2042px × 1224px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
