Geology and Petrology of Part of Toodyay District, W.A. 131 
VI. ACKNOWLEDGMENTS. 
The mapping of the area described in tliis paper has been done by parties 
of senior students in the Dept, of Geology of the University of Western Aus- 
tralia during the past ten years and the contributions made by these vai*iou.s 
parties are gratefully acknowledged. The greater part of the laboratory work 
was done in the Dept, of Mineralogy and Petrology at Cambridge, England, 
during the tenure of a Hackett Research Studentship from the University of 
Western Australia, and publication of the paper has been made possible by a 
grant from the Hackett Fund. 
1 wish to express my thanks to Professor C. E. Tilley for assistance and 
constructive criticism during the preparation of this paper, and to Dr. F. C. 
Phillips for advice in connection with the petrofabric analyses of some of the 
rocks examined. My thanks are also due to Professor E. de C. Clarke, who 
first suggested that the Toodyay District should be closely studied, and who 
has been closely associated with all the field work undertaken in this locality. 
I wish to thank Professor Clarke also for his guidance in my preliminary 
studies of these rocks, for his interest and encouragement in the work, and 
finally, for his assistance during the revision of tlie text. 
