THE ()LI)p:it MESOZOIC OK ARIZONA. 35 



nripiially of rosin or jiitch. T1h\v may, thorefoiv, poiliaps 1)0 oorrootly 

 designated piteli hlistei's and coinpaivd with the l)hsters of Canada 

 l)alsam that occui' in the hark of the balsam fir. iMU'thei' than this 

 they have no hotaiiical significance. A I'athei' large collection was 

 made, showing all the different aspects and furnishing data foi' the aliov(> 

 conclusion. (See PI. III.) The species may he called Arducdritcs 

 innuilifer, alluding to the necklace-shaped rows of resin dro])s. 



I had been several times told that petrihed 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 accoimt 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 fos.sil cones. He wrote to his father and obtained for me 

 all there was left of theii' collection. It contained nothing recognizable 

 as a cone, l)ut he said that all the good ones liad been given away. As 

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

 examine the spot, which was ver}- minutely described for me. I found 

 no trunks or petrified cones, l:)ut 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 noi1 Invest side of San Francisco 

 Moimtain, a number of ol)jects 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 blu(^ cla\- 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 inntating 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 l)rief to enable one 

 to find anything rare, and therefore when I went thei-e 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 foi- fossil 

 cones. I found none, but did find many cylindrical ol)jects, some of 

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



