. Bulletin. Natural history; Natural history. 14 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Recording data.—For convenience and uniformit}^ it has been found desirable to follow a definite plan in recording the data and notes pertaining to each specimen. An example of the method followed is reproduced in figure 6. Specimen No. 9- Date Col,l,ected; Sept. 27, 1931. Placet Onarga Nursery, Onarga, Illinois. Collected bvi Tehon and Karris. Isolation a,ttempted; Oct. 2, I931, Sescription; Specimen taken fron tree No. I8 of How No. I7. Tree 4-^ ft. high and with canker on one side of main terminal or l
. Bulletin. Natural history; Natural history. 14 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Recording data.—For convenience and uniformit}^ it has been found desirable to follow a definite plan in recording the data and notes pertaining to each specimen. An example of the method followed is reproduced in figure 6. Specimen No. 9- Date Col,l,ected; Sept. 27, 1931. Placet Onarga Nursery, Onarga, Illinois. Collected bvi Tehon and Karris. Isolation a,ttempted; Oct. 2, I931, Sescription; Specimen taken fron tree No. I8 of How No. I7. Tree 4-^ ft. high and with canker on one side of main terminal or leader. Specimen cut off 1 ft. below outside canker. Brown wood discoloration beneath canker and also the bark below canker. ' point of isolation A. healthy bark point of isolation B Specimen l''o, 9» Method: Stem flamed 3 times in 95J6 alcohol, cut at the points Indicated In the diagram and small sections cut therefrom with flamed scalpel. Sections placed in .1^ HgCl2 for 3 minutes and then washed thoroughly 3 times in sterile water. Trans- ferred with flamed forceps to poured plate of Difco corn-meal agar as in- dicated in the plate diagrams below* Isolation 9A-1. Appeared Oct. 8, 1930. Transferred Oct. 11, I93O. Detennined as Coniothyrium Sept. 30, 1931* Isolatidn 9A-5' Appeared Cot. 8, I93O. Transferred Oct. 11, 193O. Determined as Coniothyrium Feb. 2, 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: 1783px × 1402px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
