THE OLDER MESOZOIC OF ARIZONA. 35 



originally of resin or pitch. They may, therefore, perhaps be correctly 

 designated pitch blisters and compared with the blisters of Canada 

 balsam that occur in the bark of the balsam fir. Further than this 

 they have no botanical significance. A rather large collection was 

 made, showing all the different aspects and furnishing data for the above 

 conclusion. (See PI. III.) The species may be called Araucarites 

 monilifer, alluding to the necklace-shaped rows of resin drops. 



I had been several times told that petrified cones had been found 

 in connection with the fossil wood of this region. While at Stanford 

 University in October, 1899, a young man named Dane Coolidge gave 

 me an account of such a discovery made by him and his father at a 

 point 4 miles west of Williams, Ariz., some years before. He said they 

 found large petrified logs, in the vicinity of which they picked up a 

 number of fossil cones. He wrote to his father and obtained for me 

 all there was left of their collection. It contained nothing recognizable 

 as a cone, but he said that all the good ones had been given away. As 

 I was going into that country, I thought it worth while to stop and 

 examine the spot, which was very minutely described for me. I found 

 no trunks or petrified cones, but did find a few pieces of unmistakable 

 fossil wood. The locality is near Supai, on the Santa Fe Pacific Rail- 

 road, where there is a dangerous curve. ' 



A short time afterwards I was shown, at the house of Mr. T. W, 

 Brookbank, at Little Spring, on the northwest side of San Francisco 

 Mountain, a number of objects which were believed to be fossil cones. 

 They were not sufficient for me to settle the question, but I was told 

 that Mr. Brookbank, who was then away, had much more perfect ones; 

 locked up in an adjacent room. These Mrs. Brookbank said were col- 

 lected on blue clay knolls near Tanners Crossing of the Little Colorado. 

 The ones I saw were cylindrical bodies, of a reddish-brown color, sur- 

 rounded by quartz crystals, closely imitating the scales of cones. Two 

 weeks later I visited that region, but found nothing that looked like 

 these specimens. My stay there, however, was too brief to enable one 

 to find anything rare, and therefore when I went there this season and 

 devoted more than two weeks to the minute study of the wood-bearing 

 beds of that locality I paid particular attention to the search for fossil 

 cones. I found none, but did find many cylindrical objects, some of 

 them surrounded by crystals, which were certainly the same as the 



