Question: What journal published a Vedic Sanskrit text listed as number 2 in the Muktikā, the canon of the 108 Upanishads of Hinduism?

Context articles: Chandogya Upanishad
Yogatattva Upanishad
Kena Upanishad
Yoga-kundalini Upanishad
Mantrika Upanishad
Prashna Upanishad
Narayana Upanishad
Jaiminiya Upanishad Brahmana
Mundaka Upanishad
Pranagnihotra Upanishad

The Chandogya Upanishad (Sanskrit: छान्दोग्योपनिषद् , IAST: "Chāndogyopaniṣad") is a Sanskrit text embedded in the Chandogya Brahmana of the Sama Veda of Hinduism.
 It is one of the oldest Upanishads.
 It lists as number 9 in the Muktika canon of 108 Upanishads.
The Yogatattva Upanishad (Sanskrit: योगतत्त्व उपनिषत्, IAST: Yogatattva Upaniṣhad), also called as Yogatattvopanishad (योगतत्त्वोपनिषत्), is one of the minor Upanishads of Hinduism.
 A Sanskrit text, it is one of eleven Yoga Upanishads attached to the Atharvaveda, and one of twenty Yoga Upanishads in the four Vedas.
 It is listed at number 41 in the serial order of the Muktika enumerated by Rama to Hanuman in the modern era anthology of 108 Upanishads.
 It is, as an Upanishad, a part of the corpus of Vedanta literature collection that present the philosophical concepts of Hinduism.
The Kena Upanishad (Kenopaniṣat ) is a Vedic Sanskrit text classified as one of the primary or Mukhya Upanishads that is embedded inside the last section of the "Talavakara Brahmanam" of the Samaveda.
 It is listed as number 2 in the Muktikā, the canon of the 108 Upanishads of Hinduism.
The Yoga-kundalini Upanishad (Sanskrit: योगकुण्डलिनी उपनिषत् IAST: Yogakuṇḍalini Upaniṣad ), also called Yogakundali Upanishad (Sanskrit: योगकुण्डल्युपनिषत्, IAST: Yogakuṇḍalī Upaniṣad), is a minor Upanishad of Hinduism.
 The Sanskrit text is one of the 20 Yoga Upanishads, and is one of 32 Upanishads attached to the Krishna Yajurveda.
 In the Muktika canon, narrated by Rama to Hanuman, it is listed at number 86 in the anthology of 108 Upanishads.
The Mantrika Upanishad (Sanskrit: मन्त्रिक उपनिषत् , IAST:Māntrika Upaniṣad) is a minor Upanishad of Hinduism.
 The Sanskrit text is one of the 22 Samanya Upanishads, is part of the Vedanta and Yoga schools of Hindu philosophy literature, and is one of 19 Upanishads attached to the Shukla Yajurveda.
 In the Muktika canon, narrated by Rama to Hanuman, it is listed at number 32 in the anthology of 108 Upanishads.
The Prashna Upanishad (Sanskrit: प्रश्न उपनिषद् , Praśna Upaniṣad ) is an ancient Sanskrit text, embedded inside Atharva Veda, ascribed to "Pippalada" sakha of Vedic scholars.
 It is a Mukhya (primary) Upanishad, and is listed as number 4 in the Muktika canon of 108 Upanishads of Hinduism.
The Narayana Upanishad (Sanskrit: नारायण उपनिषद् ) is one of the minor Upanishads, listed as number 18 in the extended anthology of 108 Upanishads mythically recited by Rama to Hanuman.
 It is listed as number 33 in the early 19th-century Henry Thomas Colebrooke anthology.
 The text is not a Vedic era text of Hinduism, was composed in the medieval era, but its author and chronology is unclear.
 It is written in Sanskrit language, attached to the Krishna (Black) Yajurveda, is one of 14 Vaishnava Upanishads, and it recommends the bhakti of Lord Narayana (Vishnu).
The Jaiminiya Upanishad Brahmana (JUB) (Sanskrit: जैमिनीय उपनिषद्-ब्राह्मण , "Jaiminīya Upaniṣad Brāhmaņa ") or the Talavakara Upanishad Brahmana (Sanskrit: तलवकार उपनिषद्-ब्राह्मण , "Talavakāra Upaniṣad Brāhmaņa ") is a Vedic text associated with the "Jaiminiya" or the "Talavakara" shakha of the Samaveda.
 It is considered as an Aranyaka.
 A part of this text forms the Kena Upanishad.
 Together with the Bṛhadāraṇyaka and Chāndogya Upanishads, it dates to the Brahmana period of Vedic Sanskrit, likely predating the 6th century BCE.
 This first printed edition of this text, edited by Hanns Oertel along with its translation into English by him was published in the Journal of the American Oriental Society in 1896.
The Mundaka Upanishad (Sanskrit: मुण्डक उपनिषद् , Muṇḍaka Upaniṣad ) is an ancient Sanskrit Vedic text, embedded inside Atharva Veda.
 It is a Mukhya (primary) Upanishad, and is listed as number 5 in the Muktika canon of 108 Upanishads of Hinduism.
 It is among the most widely translated Upanishads.
The Pranagnihotra Upanishad (Sanskrit: प्राणाग्निहोत्र उपनिषत् , IAST:Pranagnihotra Upaniṣad) is a minor Upanishad of Hinduism.
 In the anthology of 108 Upanishads of the Muktika canon, narrated by Rama to Hanuman, it is listed at number 94.
 The Sanskrit text is one of the 22 Samanya Upanishads, part of the Vedanta school of Hindu philosophy literature and is attached to the Atharva Veda.
 The Upanishad comprises 23 verses.