2 JOURNAL , BOMBAY NATURAL HISTORY SOCIETY , FoZ. X/i. 
ferns collected in and around Mussoorie, the hill station in the Dehra 
Dun district, by Mr. P. W. Mackinnon and Mr. V. A. Mackinnon of 
that place, have from time to time been studied by me ; and during 
the same period extensive collections made in the Chamba and Kash- 
mir States bv Mr. J. C. MoDonell, of the Imperial Forest Department, 
now on deputation as Conservator of Forests in Kashmir, have been 
at my disposal for study. I have to thank the Messrs. Mackinnon 
and Mr. McDonell for many fine specimens. I frequently exchanged 
views and specimens with the late Mr. H. F. Blanford, F.R.S., who 
collected for some years in the Simla region, and embodied the results of 
his study in a paper published in the “ Journal of the Asiatic Society of 
Bengal ” in 1888. Probably every specimen of many hundreds 
collected in the Punjab and Kashmir, and also in Kumaon, 
by Mr. E. W. Trotter, of Rawalpindi and Murree, in the 
years 1887 to 1892, has been scrutinised by me, and my collection has 
been greatly increased by his gifts. Major R. W. MacLeod, I.S.C., 
showed me collections made by him in Western Kashmir in 1891, and 
in Kumaon in 1893, and gave me many fine specimens, H have seen 
the collections made in the Simla region by Mr. T. Bliss, of Lahore 
and Simla, an enthusiastic collector and horticulturist, and I possess 
many fine specimens given to me by him. And, lastly, for several 
years before I left India, the extensive collections made by Mr. J. S. 
Gamble (Director of the Imperial Forest School at Dehra Dun) in the 
Simla region of the Punjab, the Dehra Dun district of the North-Western 
Provinces (which includes the Himalayan tract — Jaunsar-Bawar), the 
Tehri-Garhwal Hill State, Sikkim and Bhutan, in the North-Eastern 
Himalaya, the Chittagong and Chutia-Nagpur divisions of Bengal, and 
the Madras Presidency, were available ; and' Mr. Gamble has given me 
many specimens collected by him in the Dehra Dun district and Tehri- 
Garhwal in places which I have never been able to visit. Early in 
1896, I spent some busy days in the herbarium of the Calcutta Bota- 
nic Garden, taking notes of the North-West Indian ferns there, and 
verifying conclusions as to the species included in this paper. I desire 
to record my grateful thanks to Sir George King, the late Director 
of the Botanical Survey of India, and to Dr. D. Prain, 
who has lately succeeded him, for the help they then gave me. Finally 
it may be mentioned that in 1872, and again in 1888-89, 1 studied the 
