effort to preserve Wright’s field-ticket, or to note the proper field-number 
on the herbarium-label of these collections, It is on the specimens belonging to 
the families not treated in either of the two volumes of the Plantae Wrightianae 
that Gray usually saved the field-tag or hastily pencilled (sometimes incorrectly) 16 
V" 
the field-numbers refering to the present list. 
It will be noted that the field-list consists of four gamuts of numbers, 
18431, I-I404; 1851, 1 - 579 ; 1852 , I-952; & 1852, 1-588. Gray had two different 
herbarium-labels, one for the collection of 1849 ,the other for the collections 
of 1851-52. Field-numbers found associated with the collections of 1849 are 
easily located in the list for 1849. The field-numbers for 1851-52 must be 
sought in Wright’s three lists for that period. The collections for 1849 were 
distributed in lo^O, and though representing 1404 numbers in bright T s list, in 
Gray’s distribution accomodated by.numbers I-828 (see transcript of Gray’s 
letter of May, 30. 1850). Gray apparently sorted and arranged Wrights collections 
in systematic order (following Bentham & Hooker) and numbered them in systematic 
sequence. Those plants representing the sequence of families Banunculaceae- 
Compositae ; and belonging to the first two lots of Wright's collections of 185I-52 
(collected betw. S. Antonio and ElPaso, and west in New Mexico and Arizona), usually 
bear numbers in the gamut, 830-I3OO. The remaining plants of the total 1851-52 
collection, representing families beyond the Ccmpositae, as well as the Banunc.- 
Compositae of the third lot of this collection,apparently always bear numbers 
above 1300. 
The extent to which Gray united collections is well shown by his .s-w.r 
1 & . 
collections of 1849* In that year W^ep^rnade I404 separate collections. These, 
supplemented by some of Wright's earlier collections (made about Sagle Pass in 
1848) , made only 828 collections when distributed by Gray. This of course does 
to 
not take in account the unicstes, which Grey retained and did not number, but, 
/ 
even so, it indicates that about half of the gppijifhens Gray distributed must 
