States; a description of which appears in the reports of 

 the survey for 1877 and 1878. 



The geological survey under Doctor Cook's manage- 

 ment has been the medium through which the closest 

 scientific research has been applied to the practical needs 

 of the State. The knowledge thus communicated has 

 led to thejdevelopment of the clays, of the iron and zinc^ 

 the soils, the swamp lands, water supply, and many other 

 interests. One of the most important achievements of 

 the survey has been the beautiful series of twenty maps 

 on the scale of one mile to an inch, topographical, geo- 

 logical and hypsometric, executed with the last degree of 

 accuracy and care, and just completed before Doctor 

 Cook's death. They are said by competent judges to be 

 the best published by the .different States, They have 

 been adopted by the United States geological survey, and 

 indeed,*are considered the best which exist. 



Doctor Cook's interest in popular education was untir- 

 ing; his efforts in that direction extended throughout his 

 life, and were wise and comprehensive. He was early 

 impressed with the great importance of agricultural ex- 

 periment stations, and examined carefully into their 

 organization and working, visiting the more prominent 

 stations in Germany, France, Italy, Sweden, Norway and 

 England in 1870, and again in 1878, while in Europe as a 

 delegate to the Congress of Geologists at the Paris Ex- 

 hibition, 



During the session of 1S79 he brought the subject be- 

 fore the New Jersey Legislature, and with his usual per- 

 severance again in 1880, when, owing to the confidence 

 of the State Government in him, the Station of New 

 Jersey was established. He was appointed its Director, 

 and under his wise management it has obtained the con- 

 fidence of the farmers in a remarkable degree; it has been 

 of the greatest possible service to the agricultural inter- 



