Hand-drawn Diagram

John Philip Trinkaus Drawing on 96 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 96 hour chick embryo, Embryology course, graded B+, May 15, 1938
John Philip Trinkaus Drawing of Whitefish Blastula Cleavage, 1938
Labeled drawing by Trinkaus of cleavage in blastula of whitefish, Embryology course, graded A, February 26, 1938
John Philip Trinkaus Drawing of Ascaris Megalocephala, 1938
Labeled drawing by Trinkaus of Ascaris megalocephala, Embryology course, February 21, 1938
John Philip Drawing of Crepidula Spiral Cleavage, 1938
Labeled drawing by Trinkaus of spiral cleavage in crepidula, Embryology course, graded B+, February 28, 2938
John Philip Trinkaus Drawing of Frog Egg Cell Division, 1938
Labeled drawing by Trinkaus of cell division in frog eggs, Embryology course, March 8, 1938
John Philip Trinkaus Drawing of 72 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 72 hour chick, Embryology course, graded B+, April 22, 1938
John Philip Trinkaus Drawing of Crepidula Cells, 1938
Labeled drawing by Trinkaus of crepidula cells, Embryology course, March 13, 1938

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