264 RECORDS OF THE BOTANICAL SURVEY OF INDIA. 
of lesser altitude, their place being taken by Desmids of a more ubiquitous 
or even alpine character. 
Certain interesting records are made for species only hitherto known from 3 
Europe. For example, Cosmarium Garrolense, described by Roy and Bug 
sett from Scotland, occurred in a collection taken from Mount Tonglu at 
10,000 ft. in the Sikkim Himalayas, in company with C. guadratum {. Willei, 
only previously known from Northern Europe and Siberia. 
The occurrence in the North-Western Himalayas at 8,500 ft. of a form of 
Debarya very near to D. desmidioides described by W. & G. 8. West from 
Cornwall is of further interest. It is peculiar also that Fragillaria Ungerta- 
num, the Diatom whose long ribbon-like colonies are so common in the North-— 
West Himalayas and also in the Central Provinces, was not observed at all ; 
in the collections from the North-Western Himalayas. 
Although the collections were perhaps not sufficiently numerous to make 
very definite statements possible, the investigation has proved. interesting 
in indicating that the Indo-Malayan type of Desmid is confined to the com 
paratively low-lying districts of the area, and that altitude is a factor which 
plays a part in the distribution of Desmids, just as in the higher plants. 
This investigation was carried out at the University of Birmingham — 
during the period 1919-1921 with the aid of a grant from the Department 
of Scientific and Industrial Research. The author wishes to acknowledge _ 
the kindness of Professor R. H. Yapp for allowing her the facilities of the 
Botanical Department and also to express her gratitude to Dr. J. 8. Bayless-_ 
Elliot for constant encouragement. eS 
A list of the collections is given below :— 
25390. | 
26847. Near Erki on the west of Simla, a dry region of gravels near the 
edge of the hills ; about 3,000 ft. May 9, 1906. = 
26880. Namoli in the same neighbourhood ; at 4,000 ft. May 11, 1906. — 
26924. Suket. May 16, 1906. 
26955. Hills above Gere upon the east of Suket, at about 7,000 ft.; a 
region of woods of pines and oaks. May 17, 1706. 
27047, Alsundi in the State of Suket at about 4,000 ft. May 20, 1906. 
27075. Suni in the hot valley of the Sutlej at about 2,100 ft., and imme-— 
diately north of Simla. May 21, 1906. - 
27295. ) Collected some time between June and August, 1906 ; no definite — 
27296. § information regarding locality available, . 
_ 27542. Green film from cut surface of jute stumps exhuding water by 
Toot-pressure. Bardwan in the Bengal plain, Sept. 15, 1906. — 
(This consisted chiefly of minute unicells, probably once motile, a 
__ but so badly preserved that identification was impossible. N.C.) _ 
