Accession No

6662.19

Brief Description

Folder of 49 paintings/drawings labelled "Wheat," no. 19 of 35, by Dr W. A. R. Dillon Weston, English, 1930s

Origin

England; Cambridgeshire

Maker

Dillon Weston, W. A. R.

Class

natural history

Earliest Date

1932

Latest Date

1938

Inscription Date

Material

paper

Dimensions

365mm x 250mm

Special Collection

Dr W. A. R. Dillon Weston Collection

Provenance

Inscription

Many pages have typed notes; see Description Notes.

Description Notes

Folder of 49 paintings/drawings labelled "Wheat," no. 19 of 35, by Dr W. A. R. Dillon Weston, English, 1930s

NOTE: all objects have been transferred into archive folders for conservation purposes; original folders were photographed (see Images) and are stored separately.

6662.19.a -- "Wheat (Erysiphe graminis D.C.)."
Watercolour of an infected wheat plant; location and date, July 1936, noted.

6662.19.b -- "Wheat Mildew. Erysiphe graminis."
Watercolour of an infected wheat plant labelled Cleistocarp stage.

6662.19.c -- "WINTER SPORE STAGE OF A POWDERY MILDEW."
A painting of a fungal growth has been cut and pasted on the page and labelled "A model of a cleistocarp (Perithceium)." Typed notes describe its role in the life cycle of the fungus.

6662.19.d --

6662.19.d -- "Black RUST (Puccinia graminis) on cereal leaf."
A watercolour painting and four pen diagrams showing the life cycle of the fungus on wheat. Typed labels and an explanation of the cycle are also included.

6662.19.e --
Apparently a continuation of the previous page; a very detailed magnified diagram in pen and a watercolour of an infected barberry leaf (serves as an intermediate host), with typed labels.

6662.19.f -- "Yellow Rust. Puccinia glumarum"
A watercolour of a wheat plant with typed description of the specimen and farm of origin.

6662.19.g -- "BUNT OF WHEAT. Tilletia caries."
A watercolour of a large wheat bunt ball, the typed notes explain that this carries millions of bunt spores.

6662.19.h --
A sheet of graph paper divided into tiny squares; the typed notes explain that they serve as a scale, since although there are 15,000 squares on the page, if a bunt ball were to explode and scatter its spores proportionally over the page, then each tiny square would contain 600 spores.

6662.19.i -- "Bunt of Wheat."
A series of small watercolours of wheat bunts and their spores. Typed notes describe how the bunt balls spread spores and describe the farm of origin of the specimens, and date 18 April 1934.

6662.19.j -- "Loose Smut of Wheat Ustilago tritici."
A watercolour painting of a wheat plant.

6662.19.k -- POWDERY MILDEW Erysiphe polygoni, DC."
Watercolour diagram of a conidiophore.

6662.19.l -- "WHEAT. Take-all or Whiteheads. Ophiobolus graminis."
Watercolour of a wheat plant.

6662.19.m -- "WHEAT. Take-all or Whiteheads. Ophiobolus graminis."
Watercolour of a wheat plant.

6662.19.n -- "WHITE HEADS OF WHEAT. Ophiobolus graminis."
Watercolour of a wheat plant. with notes on the condition of the specimen and date, November 1935.

6662.19.o -- "WHITE HEADS OF WHEAT. Ophiobolus graminis."
Watercolour of a wheat plant. with notes on the condition of the specimen and date, November 1935.

6662.19.p -- "WHEAT. Take-all or Whiteheads. Ophiobolus graminis."
Watercolour of a wheat plant.

6662.19.q -- "Wheat. Fusarium sp. damage."
Watercolour of a wheat plant, dated August 1934.

6662.19.r -- "ERGOTS."
Several small drawings of brown seed-like items. Labelled "Portugal," 17 November 1933.

6662.19.s -- "'DEFICIENCY DISEASE."
Six watercolours of wheat leaves, with typed notes describing the specimen and the farm of origin. They suggest a possible cause and symptoms of the disease.

6662.19.t -- "NITROGEN STARVATION."
Two watercolours of wheat plants, with notes on the symptoms of nitrogen starvation.

6662.19.u -- "The result of exposing wheat grains to certain vapours. Methyl Mercuric Chloride."
Five small watercolour sketches and typed notes describing the experiment.

6662.19.v --
Nine unlabelled watercolours similar to those on the previous page.

6662.19.w --
Nine unlabelled watercolours similar to those on the previous page.

6662.19.x -- "The result of exposing wheat grains to certain vapours. Methyl Mercuric Chloride."
Five small watercolour sketches and typed notes describing the experiment.

6662.19.y -- "The result of exposing wheat grains to certain vapours. Ethyl Mercuric Chloride."
Five small watercolour sketches and typed notes describing the experiment.

6662.19.z -- "The result of exposing wheat grains to certain vapours. Methyl Mercuric Iodide."
Four small watercolour sketches and typed notes describing the experiment.

6662.19.aa -- "The result of exposing wheat grains to certain vapours. Methyl Mercuric Iodide."
Five small watercolour sketches and typed notes describing the experiment.

6662.19.bb -- "Wheat. Mould. (Cladosporium herbarbum)."
Watercolour of a wheat plant, dated August 1934.

6662.19.cc -- "Drought and heated condition of surface roots."
Watercolour of a wheat plant, dated 25 May 1933, with notes on the farm of origin.

6662.19.dd -- "DROUGHT."
Watercolour of a wheat plant, dated 3 June, with notes on the farm of origin and cause of trouble.

6662.19.ee -- "Discoloured wheat. Black point (?)."
Several small watercolours of wheat seeds, with typed notes speculating about the cause of the problem. The seeds were sent on to the Dominion Rust Research Laboratory in Winnipeg, Canada.

6662.19.ff -- "WHEAT."
Watercolour of a wheat plant.

6662.19.gg -- "WHEAT."
Watercolour of a wheat plant.

6662.19.hh -- "WHEAT."
Watercolour of a wheat plant.

6662.19.ii --
Two unlabelled watercolour/pencil drawings.

6662.19.jj -- "WHEAT SAWFLY DAMAGE."
Two drawings of wheat plants with typed notes about the origin of the specimen, dated 12 July 1933.

6662.19.kk -- "WHEAT. Wheat Stem Sawfly."
Watercolour of a wheat plant.

6662.19.ll -- "WHEAT. Wheat Stem Sawfly."
Watercolour of a wheat plant.

6662.19.mm -- "WHEAT. Wheat Stem Sawfly."
Watercolour of a wheat plant.

6662.19.nn -- "Wheat. Injured by Flea beetle larva."
Two watercolours of wheat plants, dated 27 April 1934.

6662.19.oo -- "Wheat. Injured by Flea beetle larva."
Two watercolours of wheat plants, dated 27 April 1934.

6662.19.pp -- "Wheat Ear Cockles Anguillulina dispaci."
Several small cockles/seeds in watercolour.

6662.19.qq --
Six unabelled drawings of ridged blue shell-shaped objects.

6662.19.rr -- "WHEAT. Ustilago tritici."
A watercolour of a wheat plant with a note on failure to control by chemical dust disinfection.

6662.19.ss -- "Ustilago perenanns."
Watercolour of a wheat plant.

6662.19.tt -- "Bromus sterilis (Fusarium culmorum).
Watercolour of a wheat plant.

6662.19.uu -- "AVENA FLAVESCENS. FUSARIUM."
Watercolour of a wheat plant.

6662.19.vv -- "Wheat. Yellow rust. (Puccinia glumarum)."
Watercolour of a wheat plant with notes on the development of the disease, dated 24 June 1935, and resistant varieties noted.

6662.19.ww -- "YELLOW RUST. Puccinia glumarum"
A watercolour of an infected wheat leaf & typed notes have been pasted on the page; the notes describe a visit to the farm of origin, dated 13 May 1933.

References

Events