June, 1920] MISCELLANEOUS 445 



3041. Horchem, B. J. What was accomplished in regard to state parks in the 37th General 

 Assembly. Rept. Iowa Statu Hortic. Soc. 53: 37S-379. 1918. — A brief history of the Iowa 

 legislation for the creation of state parka. — L. II. Pammel. 



3042. K[irciiner], O. [Kcv. of: Kaisebling, Carl. Die mikrophotographischen Ap- 

 parate und ihre Handhabung. (Microphotographical apparatus and their use.) 60 ill" \tr. 

 Stuttgart.] Zeitschr. Pflanzenkrankh. 29: 48. 1919. — This volume published as vol. 1 of the 

 Handbook of Microscopic Technique deals with the microscope, photographic apparatus, 

 source of illumination, and related subjects. — if. T. Giissow. 



3043. Krugenberg, B., and E. Tii. Tielkma.w. Weitere Mitteilungen iiber die Farbung 

 WEP (Dioxychrom) und iiber zwei neue Trioxychrome. [Further report on "WEP" fdioxy- 

 chrome) stain and two new trioxychromes.] Zeitschr. Wiss. Mikrosk. 35: 170-174. 1919. 



3044. Lazell, Fred J. Action needed in conservation. Rept. Iowa State Hortic. Soc. 

 53: 353-356. 1918. — Urges the importance of creating state parks in Iowa. — L. II. Pammel. 



3045. Lees, James H. Park sites along the Des Moines valley. Rept. Iowa State Hortic. 

 Soc. 53: 367-371. 191S. — Gives an account of places along the Des Moines river suitable for 

 park purposes. He begins with Tuttle Lake, following the river down to its mouth, giving 

 an account of the geology of the region. — L. H. Pammel. 



3046. Lindet. [Rev. of: Rolet, S. Plantes a parfum et les aromatiques. (Perfume 

 plants.) 432 p., 100 fig. 1918.] Compt. Rend. Acad. Agric. France 5: 403-404. 1919.— A 

 brief review of this book and a discussion of the availability of much of France for the per- 

 fume industry. — E. A. Bessey. 



3047. Mayer, P. Uber die sogenannten Sublimatkristalle in mikroskopischen Praparaten. 

 [So-called sublimate crystals in microscopic preparations.] Zeitschr. Wiss. Mikrosk. 35: 161- 

 169. 1919. 



3048. McNider, Mrs. C. H. What the Mississippi Valley national park would mean to 

 Iowa. Rept. Iowa State Hortic. Soc. 53 : 360-363. 1918. — Gives an account of the yellow lotua 

 (Nelumbo lutea) and the scenic beauty of the region about McGregor, Iowa. — L. H. Pammel. 



3049. Naumann, Einar. Ein einfaches Zeigerokular. [Simple demonstration ocular. 

 Zeitschr. Wiss. Mikrosk. 35: 248. 1919. 



3050. Naumann, Einar. Uber die okulare Begrenzung des mikroskopischen Gesichts- 

 feldes. [Ocular limitation of microscopic field of vision.] Zeitschr. Wiss. Mikrosk. 35: 241- 

 242. 1919. 



3051. Naumann, Einar. Uber die Einteilung des Gesichtsfeldes beim Zahlen mikro- 

 skopischer Korper. [Division of field of vision for microscopic counting.] Zeitschr. Wiss. 

 Mikrosk. 35: 245-247. 1919. — A "universal" counting device. By means of a reflector any 

 sort of counting field outside of the microscope is thrown in through the condenser. — H. G. 

 Barbour. 



3052. Orr, Ellison. Conservation and education. Rept. Iowa State Hortic. Soc. 53: 

 351-353. 1918. — Gives a brief resume of the proposed national park at McGregor, Iowa, and 

 the importance of preserving the natural beauty, wild animal and plant life of Iowa. Calls 

 attention to the occurrence of the balsam fir on the Yellow River in Allamakee count}', Iowa. 

 — L. //. Pammel. 



3053. Osborn, C. C. Peat in the Dismal Swamp, Virginia and North Carolina. United 

 States Geol. Surv. Bull. 711: 41-59. PI. 4-6 (including 1 folded map). Nov., 1919— This 

 seems to be largely a compilation from the writings of previous investigators, some of 



