Official proceedings of the Board of Education of the City of Grand Rapids, Michigan.

Description based on: May 6, 1912 to May 5, 1913.

Catalogue of flowering plants of the Southern peninsula of Michigan, with a few of the Crytogamia. Grand Rapids, 1873.

Imprint on cover: Grand Rapids, Mich., C.N. White, job printer and book binder.

A framework for planning in Grand Rapids,

Mode of access: Internet.

A Select library of the Nicene and post-Nicene Fathers of the Christian church : [second series] /

Includes indexes.

The role of the seed coat in phytochrome-controlled seed germination in Lactuca sativa L. cv. Grand Rapids

The effect of scarification with sodium hypochloride on light sensitivity in seeds of Lactuca sativa L. cv. Grand Rapids is presented in the paper. Light-requiring lettuce seeds germinated in both dark and continuous light after scarification and 36 degrees C pre-incubation restored light sensitivity at 25 degrees C. Curves of dose-response indicated that chemical scarification induced a change in the control of seed germination from Low Fluence Response to the Very Low Fluence Response. Pre-incubation at 36 degrees C return the control to the Low Fluence Response of phytochrome action.