224 BOTANICAL GAZETTE [SEPTEMBER 
22. Lawson, A. A., Gametophytes, archegonia, fertilization, and embryo of 
Sequoia sempervirens Ann. Botany 18:1-28. pls. 1-4. 1904. 
2a, : etophytes, fertilization, and — of Cryptomeria japonica. 
Ann. ines 18:417-444. pls. 27-30. 
24. , Gametophytes aid em said a saath Douglasii. Ann. 
Botany 23:163-180. pls. 12-14 
25. , Gametophytes and ‘by of Sciadopitys verticillata. Ann. 
Botany 24:403-421. pls. 29-31. Igto. 
26. Lyon, Harotp L., The scdete tie of Ginkgo. Minn. Bot. Studies 3: 
275-290. pls. 29-34. 1904. 
27. MIRBEL and Spacu, Notes sur l’embryogenie des Pinus Laricio et oe 
des Thuja orientalis et occidentalis, et du Taxus baccata. Ann. Sci. Nat. II. 
20:257. 1843. 
28. Miyake, K., On the development of the sexual organs and fertilization in 
Picea excelsa. Ann. Botany 17:351-372. pls. 4. 190 
, Contributions to the fertilization and or of Abies 
balsamea. Beihefte Bot. Zeit. 14:134-144. pls. 6-8. 190. 
30. Miyake, Kricut, and Yazin, Kono, On the ie and embryo of 
Pseudolarix. Ann. Botany 25:639-647. pl. 48. 1911. 
31. Murritt, Wa. A., Development of the archegonium and fertilization in 
the hemlock spruce (Tsuga canadensis Carr.). Ann. Botany 14:583-607- 
pls. 31, 32. 1900 
32. Prirzer, E., Bot. Zeit. 29:893. 1871. 
33- SAxTON, W. T., Development of the embryo in Pinus pinaster Soland., 
with some notes on the life history of the species in Cape Colony. 
S. African Jour. Sci. 6:52—-59. pl. 2 
, Contributions to the = ae Actinostrobus pyramidalis Miq. 
Ann. ORES 272321-345. 25-28. 
35- SCHACHT, H. Wei ac eciaas pr Oh cus oboat. Place and 
date of siblichtioe not given (about 1852). 
36. SCHLEDEN, Dr., Principles of scientific botany. Engl. transl. London. 
1849. 
37. SHaw, W. R., Contributions to the life history of Sequoia semperivirens. 
Bor. Gaz. 21:332-339. pl. 24. 18 
38. STRASBURGER, E., Die Conifern pa Gnetaceen. Jena. 1872. 
39- , Die Angioepemen und die Gymnospermen. ton: 1870. 
DESCRIPTION OF PLATES VI-X 
Figures of plate VI from dissected preparations, except figs. 1-5; figures of 
plate VII all from serial sections; figures of plates VI and VII X300; figures 
of plates VIII-X drawn to same scale from dissected preparations and X80; 
lettering in all figures as follows: a, apical cell; ¢, embryonal tubes; é:, first 
embryonal tube (or its initial cell if it marks an unelongated cell); ¢2, second 
