May 3i, 1924 Cell Sap Density and Environmental Conditions 
903 
(43) Hann, J. 
1903. handbook of climatology. Tr. by R. D. Ward. 437 p., illus. 
New York and London. 
(44) Hannig, E. 
1912. UNTERSUCHUNGEN UBER DIE YERTEILUNG DES OSMOTISCHEN 
DRUCKS IN DER PFLANZE IN HINSICHT AUF DIE WASSERLEITUNG. 
Ber. Deut. Bot. Gesell. 30: 194-204. 
(45) Hanson, H. C. 
1917. LEAF-STRUCTURE AS RELATED TO ENVIRONMENT. Amei\ Jour. 
Bot. 4: 533-560, illus. 
(46) Harris, J. A., and Gortner, R. A. 
1914. NOTES ON THE CALCULATION OF THE OSMOTIC PRESSURE OF EX¬ 
PRESSED VEGETABLE SAPS FROM THE DEPRESSION OF THE FREEZ¬ 
ING POINT, WITH A TABLE FOR THE VALUES OF P FOR A = 0.001° 
to A=2.999°. Amer. Jour. Bot. 1: 75-78. 
(47) - 
1915. AN EXTENSION TO 5.99° OF TABLES TO DETERMINE THE OSMOTIC 
PRESSURE OF EXPRESSED VEGETABLE SAPS FROM THE DEPRES¬ 
SION of the freezing point. Amer. Jour. Bot. 2: 418-419. 
(48) -Lawrence, J. V., and Gortner, R. A. 
1915. on the osmotic pressure of the juices of desert plants. 
Science 41: 656-658. 
(49) - 
1916. ON THE OSMOTIC PRESSURE OF THE TISSUE FLUIDS OF JAMAICAN 
loranthaceae parasitic on various hosts. Amer. Jour. Bot. 
3: 438-455, illus. 
(50) - and Gortner, R. A. 
1916. the cryoscopic constants of expressed vegetable saps, AS 
RELATED TO LOCAL ENVIRONMENTAL CONDITIONS IN THE ARIZONA 
deserts. Physiol. Researches 2: 1-49. 
(51) -and Popenoe, W. 
1916. freezing-point lowering of the LEAF SAP OF the horticul¬ 
tural types of persea Americana. Jour. Agr. Research 
7: 261-268. 
(52) - 
1917. physical chemistry in the service of phytogeography. Sci¬ 
ence 46: 25-30. 
(53) - Gortner, R. A., and Lawrence, J. Y. 
1917. the relationship between the osmotic concentration of 
LEAF SAP AND HEIGHT OF LEAF INSERTION IN TREES. Bui. 
Torrey Bot. Club 44: 267-286. 
(54) - and Lawrence, J. V. 
1917. THE OSMOTIC CONCENTRATION OF THE TISSUE FLUIDS OF JAMAICAN 
MONTANE RAIN-FOREST VEGETATION. Amer. Jour. Bot. 4: 
268-298. 
(55) - 
1917. THE OSMOTIC CONCENTRATION OF THE SAP OF THE LEAVES OF 
MANGROVE TREES. Biol. Bill. 32: 202-211. 
(56) - 
1917. CRYOSCOPIC DETERMINATIONS ON TISSUE FLUIDS OF PLANTS OF 
THE JAMAICAN COASTAL DESERTS. Bot. Gaz. 64*. 285~305. 
(57) - 
1918. ON THE OSMOTIC CONCENTRATION OF THE TISSUE FLUIDS OF PHAN¬ 
EROGAMIC ephipiiytes. Amer. Jour. Bot. 5: 490-506. 
