4 DEPARTMENT OF AGRICULTURE BULS. 851-875. 



Department Bulletin No. 853.— The Organization and Management of 



Farms in North western Pennsylvania — Continued. Page. 



Production per farm 10 



Distribution of farm area 12 



Distribution of capital 13 



Distribution of receipts 14 



Distribution of crop area 15 



Distribution of live stock 15 



Expenses 16 



Size of farm, organization, and profits 17 



Live stock 2 22 



Crops 25 



Maintenance of soil fertility 28 



Income from sources outside tlie farm 30 



Tenure 31 



Department Bulletin No. 854. — The Flow of Water in Drain Tile : 



Introduction 1 



Scope of the investigation 2 



Conclusions 4 



Description of experimental plant 5 



Pumping plant 5 



Supply tanks 5 



Weirs 6 



Hook gauges 6 



Flume 6 



Method of changing grade 6 



Laying the tile 7 



Covering the tile 7 



Piezometers and piezometer tubes S 



Nomenclature ■ 9 



Formula? for flow of water in drain tile 9 



Necessary data for comparing velocity formulas 12 



Mean velocity 12 



Hydraulic grade or slope 12 



Internal size of drain tiles 13 



Actual depth of flow 14 



Methods of conducting tests 15 



Measurement of mean velocity 17 



Results of observations 18 



Discussion of computations 34 



Formula? for tile flowing full 35 



Formula? for tile flowing partly full 40 



Comparison of various formula? 47 



Loss of head in catch basins 4Q 



Department Bulletin No. 855. — Saponified Cresol Solutions: 



Properties of mixtures with rosin soap 2 



Observations on speed of dilution 3 



Cost of materials used 4 



Summary 5 



Department Bulletin No. 856. — Currant-grape Growing : A Promising 

 New Industry: 



Historical introduction 1 



Importance of the currant industry in Greece 2 



Imports of currants into the United States 3 



Explorer's notes on current grapes 3 



Cuffrant-grape varieties 4 



Introduction of Panariti cuttings 5 



Description of the Panariti grape 6 



Currant grapes successfully grown in this country 7 



Conditions suited to currant-grape culture 7 



Analysis of the soil of the Fresno Experiment Vineyard 8 



Preparation of the soil, planting, and culture of currant vineyards — 9 



Pruning and training the vines 9 



