PROFESSOR JOHN HUTTON BALFOUR. 405 
at Callater to meet the car and get a change of clothes. Mr. 
Fraser spent the whole day at Glen Callater looking for 
Cystopteris montana, but was unsuccessful. Mr. Colvin, Mr. 
Barclay, and Mr. Stuart returned early. Mr. Naylor lost his 
way in the mist and did not reach the hotel till late, having 
walked by the Invercauld side of the mountain. Among the 
plants collected to-day were :— 
Cerastium alpinum Aira alpina vivipara 
Saxifraga rivularis 
Alopecurus alpinus 
Phleum alpinum 
Poa alpina vivipara 
Cryptogramme crispa 
Polypodium alpestre 
Looked at the old station for Mulgedium alpinum, but could not 
Se€€ any specimens of the plant. The day was one of the wettest 
and coldest we had experienced during our trip. Thermometer 
on summit, 38°. 
Saturday, 11th August 1866. 
This morning was very fine. Mr. Colvin and Mr. Banley left 
for Edinburgh, by Blairgowrie, along with Dr. Burton of Walsall. 
The rest of the party (eight in number) left by drag for Linn of 
Dee, and proceeded beyond it as far as the twopenny bridge 
over the Dee. Thence walked to Cairn Toul. The day was 
warm and sunny and the walk was fatiguing. Owing to the 
swollen state of the streams we had to tord one of them which 
joins the Dee about two miles from Cairn Toul. Mr. Prankerd 
went to the top of Ben na Mac Dhu. The rest went to Cairn 
Toul. We did not return from Cairn Toul until 10 p.m., having 
walked some twenty-two miles and driven above twenty. | 
Among the plants gathered were :— 
Arabis petraea Luzula arcuata 
Cochlearia greenlandica Carex pauciflora 
Silene acaulis , lagopina 
Cerastium ee Aira alpina vivipara 
num Poa alpina vivipara 
Sibbaldia iva goat Cryptogramme crispa 
(in flower) Polypodium alpestre 
Drosera anglica , 
