Plate CXII. Map of the Casa Grande group 321
CXIII. Ground plan of Casa Grande ruin 322
CXIV. General view of Casa Grande 325
CXV. Interior wall surface 326
CXVI. West front of Casa Grande showing blocks of masonry 329
CXVII. Plan showing ground-level erosion, tie-rods,
limits of work, and lines of ground sections 330
CXVIII. East-and-west ground sections 333
CXIX. North-and-south ground sections 335
CXX. South front of the ruin, showing underpinning
and ends of tie-rods 337
CXXI. View from the southeast before the completion
of the work 339
CXXII. Suggested plan of roof and support 340
CXXIII. Section through _A-B_ of roof plan,
showing suggested roof support 343
CXXIV. Section through _C-D_ of roof plan,
showing suggested roof support 345
CXXV. Map showing location of Casa Grande reservation 346

[Transcriber's Note:
In the original, all illustrations are full-page plates distributed
evenly through the text. Their exact position has not been shown in
this e-text.]

* * * * *

THE REPAIR OF CASA GRANDE RUIN

By Cosmos Mindeleff

* * * * *

INTRODUCTION

In March, 1889, an appropriation of $2,000 was made by Congress for the
repair of Casa Grande ruin in southern Arizona. This amount was
insufficient for complete restoration, but under the authority of the
act of Congress making the appropriation some work was done. Partly as
an aid to further possible work, and partly that there may be an
available record of what has been done for the benefit of future
students of American archeology, this report is presented.

A full description of Casa Grande has been given by the writer in a
published memoir[1] on that ruin, hence only a brief account will now be
necessary to aid in making the present report intelligible. Following
this description is a statement of the condition of the ruin in 1891 and
of the plans formed for its repair, the latter bei