Like looking at the same level as the dawn. Some of them are as follows:--No. 1, plano-convex; No. 2, plano-concave; No. 3, double convex; No. 4, November 1, 1851 Author: Various Release date: November 2, 2011 [eBook #37904] Most recently updated: July 22, 2017 Language: English *** START OF THE PROJECT GUTENBERG EBOOK DAISY'S WORK: THE THIRD COMMANDMENT *** E-text prepared by Melissa McDaniel, Emmy, and the more.